Home / 19,938.89-29,915.12-12,534.68

Finding the Fourth Proportional to 19,938.89, 29,915.12 and 12,534.68

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Solution

The fourth proportional to 19,938.89, 29,915.12 and 12,534.68 is: 18,806.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.89 : 29,915.12 = 12,534.68 : x
  2. Step 2: Convert to fraction form
    19,938.89/29,915.12 = 12,534.68/x
  3. Step 3: Cross multiply
    19,938.89x = 29,915.12 × 12,534.68
  4. Step 4: Simplify right side
    19,938.89x = 374,976,456.36
  5. Step 5: Solve for x
    x = 374,976,456.36/19,938.89
  6. Step 6: Final answer
    x = 18,806.29

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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.