Home / 11,820.51-16,319.90-7,350.35

Finding the Fourth Proportional to 11,820.51, 16,319.90 and 7,350.35

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Solution

The fourth proportional to 11,820.51, 16,319.90 and 7,350.35 is: 10,148.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.51 : 16,319.90 = 7,350.35 : x
  2. Step 2: Convert to fraction form
    11,820.51/16,319.90 = 7,350.35/x
  3. Step 3: Cross multiply
    11,820.51x = 16,319.90 × 7,350.35
  4. Step 4: Simplify right side
    11,820.51x = 119,956,913.74
  5. Step 5: Solve for x
    x = 119,956,913.74/11,820.51
  6. Step 6: Final answer
    x = 10,148.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.