Home / 25,920.72-38,916.60-13,449.36

Finding the Fourth Proportional to 25,920.72, 38,916.60 and 13,449.36

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Solution

The fourth proportional to 25,920.72, 38,916.60 and 13,449.36 is: 20,192.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,920.72 : 38,916.60 = 13,449.36 : x
  2. Step 2: Convert to fraction form
    25,920.72/38,916.60 = 13,449.36/x
  3. Step 3: Cross multiply
    25,920.72x = 38,916.60 × 13,449.36
  4. Step 4: Simplify right side
    25,920.72x = 523,403,363.38
  5. Step 5: Solve for x
    x = 523,403,363.38/25,920.72
  6. Step 6: Final answer
    x = 20,192.47

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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.