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Finding the Fourth Proportional to 14,564.80, 21,818.40 and 9,899.20

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Solution

The fourth proportional to 14,564.80, 21,818.40 and 9,899.20 is: 14,829.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,564.80 : 21,818.40 = 9,899.20 : x
  2. Step 2: Convert to fraction form
    14,564.80/21,818.40 = 9,899.20/x
  3. Step 3: Cross multiply
    14,564.80x = 21,818.40 × 9,899.20
  4. Step 4: Simplify right side
    14,564.80x = 215,984,705.28
  5. Step 5: Solve for x
    x = 215,984,705.28/14,564.80
  6. Step 6: Final answer
    x = 14,829.23

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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.