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Finding the Fourth Proportional to 19,615.84, 29,440.17 and 10,259.13

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Solution

The fourth proportional to 19,615.84, 29,440.17 and 10,259.13 is: 15,397.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,615.84 : 29,440.17 = 10,259.13 : x
  2. Step 2: Convert to fraction form
    19,615.84/29,440.17 = 10,259.13/x
  3. Step 3: Cross multiply
    19,615.84x = 29,440.17 × 10,259.13
  4. Step 4: Simplify right side
    19,615.84x = 302,030,531.25
  5. Step 5: Solve for x
    x = 302,030,531.25/19,615.84
  6. Step 6: Final answer
    x = 15,397.28

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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.