Home / 12,408,053.70-18,612,080.55-9,219,407.70

Finding the Fourth Proportional to 12,408,053.70, 18,612,080.55 and 9,219,407.70

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Solution

The fourth proportional to 12,408,053.70, 18,612,080.55 and 9,219,407.70 is: 13,829,111.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408,053.70 : 18,612,080.55 = 9,219,407.70 : x
  2. Step 2: Convert to fraction form
    12,408,053.70/18,612,080.55 = 9,219,407.70/x
  3. Step 3: Cross multiply
    12,408,053.70x = 18,612,080.55 × 9,219,407.70
  4. Step 4: Simplify right side
    12,408,053.70x = 171,592,358,735,690.22
  5. Step 5: Solve for x
    x = 171,592,358,735,690.22/12,408,053.70
  6. Step 6: Final answer
    x = 13,829,111.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.