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Finding the Fourth Proportional to 19,802.88, 29,581.20 and 15,914.88

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Solution

The fourth proportional to 19,802.88, 29,581.20 and 15,914.88 is: 23,773.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,802.88 : 29,581.20 = 15,914.88 : x
  2. Step 2: Convert to fraction form
    19,802.88/29,581.20 = 15,914.88/x
  3. Step 3: Cross multiply
    19,802.88x = 29,581.20 × 15,914.88
  4. Step 4: Simplify right side
    19,802.88x = 470,781,248.26
  5. Step 5: Solve for x
    x = 470,781,248.26/19,802.88
  6. Step 6: Final answer
    x = 23,773.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.