Home / 25,172.86-34,729.90-15,609.30

Finding the Fourth Proportional to 25,172.86, 34,729.90 and 15,609.30

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Solution

The fourth proportional to 25,172.86, 34,729.90 and 15,609.30 is: 21,535.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,172.86 : 34,729.90 = 15,609.30 : x
  2. Step 2: Convert to fraction form
    25,172.86/34,729.90 = 15,609.30/x
  3. Step 3: Cross multiply
    25,172.86x = 34,729.90 × 15,609.30
  4. Step 4: Simplify right side
    25,172.86x = 542,109,428.07
  5. Step 5: Solve for x
    x = 542,109,428.07/25,172.86
  6. Step 6: Final answer
    x = 21,535.47

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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.