Home / 19,938.20-29,931.60-19,792.40

Finding the Fourth Proportional to 19,938.20, 29,931.60 and 19,792.40

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Solution

The fourth proportional to 19,938.20, 29,931.60 and 19,792.40 is: 29,712.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.20 : 29,931.60 = 19,792.40 : x
  2. Step 2: Convert to fraction form
    19,938.20/29,931.60 = 19,792.40/x
  3. Step 3: Cross multiply
    19,938.20x = 29,931.60 × 19,792.40
  4. Step 4: Simplify right side
    19,938.20x = 592,418,199.84
  5. Step 5: Solve for x
    x = 592,418,199.84/19,938.20
  6. Step 6: Final answer
    x = 29,712.72

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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.