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Finding the Fourth Proportional to 15,073.90, 20,802.50 and 9,104.38

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Solution

The fourth proportional to 15,073.90, 20,802.50 and 9,104.38 is: 12,564.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,073.90 : 20,802.50 = 9,104.38 : x
  2. Step 2: Convert to fraction form
    15,073.90/20,802.50 = 9,104.38/x
  3. Step 3: Cross multiply
    15,073.90x = 20,802.50 × 9,104.38
  4. Step 4: Simplify right side
    15,073.90x = 189,393,864.95
  5. Step 5: Solve for x
    x = 189,393,864.95/15,073.90
  6. Step 6: Final answer
    x = 12,564.36

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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.