Home / 28,391.91-42,557.28-13,569.31

Finding the Fourth Proportional to 28,391.91, 42,557.28 and 13,569.31

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Solution

The fourth proportional to 28,391.91, 42,557.28 and 13,569.31 is: 20,339.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,391.91 : 42,557.28 = 13,569.31 : x
  2. Step 2: Convert to fraction form
    28,391.91/42,557.28 = 13,569.31/x
  3. Step 3: Cross multiply
    28,391.91x = 42,557.28 × 13,569.31
  4. Step 4: Simplify right side
    28,391.91x = 577,472,925.08
  5. Step 5: Solve for x
    x = 577,472,925.08/28,391.91
  6. Step 6: Final answer
    x = 20,339.35

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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.