Home / 14,169.60-21,254.40-12,638.70

Finding the Fourth Proportional to 14,169.60, 21,254.40 and 12,638.70

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Solution

The fourth proportional to 14,169.60, 21,254.40 and 12,638.70 is: 18,958.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,169.60 : 21,254.40 = 12,638.70 : x
  2. Step 2: Convert to fraction form
    14,169.60/21,254.40 = 12,638.70/x
  3. Step 3: Cross multiply
    14,169.60x = 21,254.40 × 12,638.70
  4. Step 4: Simplify right side
    14,169.60x = 268,627,985.28
  5. Step 5: Solve for x
    x = 268,627,985.28/14,169.60
  6. Step 6: Final answer
    x = 18,958.05

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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.