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Finding the Fourth Proportional to 29,208, 40,307.04 and 15,960

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Solution

The fourth proportional to 29,208, 40,307.04 and 15,960 is: 22,024.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,208 : 40,307.04 = 15,960 : x
  2. Step 2: Convert to fraction form
    29,208/40,307.04 = 15,960/x
  3. Step 3: Cross multiply
    29,208x = 40,307.04 × 15,960
  4. Step 4: Simplify right side
    29,208x = 643,300,358.40
  5. Step 5: Solve for x
    x = 643,300,358.40/29,208
  6. Step 6: Final answer
    x = 22,024.80

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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.