Home / 19,943.60-29,915.40-12,167.60

Finding the Fourth Proportional to 19,943.60, 29,915.40 and 12,167.60

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Solution

The fourth proportional to 19,943.60, 29,915.40 and 12,167.60 is: 18,251.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.60 : 29,915.40 = 12,167.60 : x
  2. Step 2: Convert to fraction form
    19,943.60/29,915.40 = 12,167.60/x
  3. Step 3: Cross multiply
    19,943.60x = 29,915.40 × 12,167.60
  4. Step 4: Simplify right side
    19,943.60x = 363,998,621.04
  5. Step 5: Solve for x
    x = 363,998,621.04/19,943.60
  6. Step 6: Final answer
    x = 18,251.40

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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.