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Finding the Fourth Proportional to 17,887.80, 24,685.80 and 9,930.15

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Solution

The fourth proportional to 17,887.80, 24,685.80 and 9,930.15 is: 13,703.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,887.80 : 24,685.80 = 9,930.15 : x
  2. Step 2: Convert to fraction form
    17,887.80/24,685.80 = 9,930.15/x
  3. Step 3: Cross multiply
    17,887.80x = 24,685.80 × 9,930.15
  4. Step 4: Simplify right side
    17,887.80x = 245,133,696.87
  5. Step 5: Solve for x
    x = 245,133,696.87/17,887.80
  6. Step 6: Final answer
    x = 13,703.96

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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.