Home / 28,118.06-38,801.40-15,542

Finding the Fourth Proportional to 28,118.06, 38,801.40 and 15,542

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Solution

The fourth proportional to 28,118.06, 38,801.40 and 15,542 is: 21,447.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.06 : 38,801.40 = 15,542 : x
  2. Step 2: Convert to fraction form
    28,118.06/38,801.40 = 15,542/x
  3. Step 3: Cross multiply
    28,118.06x = 38,801.40 × 15,542
  4. Step 4: Simplify right side
    28,118.06x = 603,051,358.80
  5. Step 5: Solve for x
    x = 603,051,358.80/28,118.06
  6. Step 6: Final answer
    x = 21,447.12

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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.