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Finding the Fourth Proportional to 18,999.54, 28,499.80 and 9,001.94

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Solution

The fourth proportional to 18,999.54, 28,499.80 and 9,001.94 is: 13,503.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.54 : 28,499.80 = 9,001.94 : x
  2. Step 2: Convert to fraction form
    18,999.54/28,499.80 = 9,001.94/x
  3. Step 3: Cross multiply
    18,999.54x = 28,499.80 × 9,001.94
  4. Step 4: Simplify right side
    18,999.54x = 256,553,489.61
  5. Step 5: Solve for x
    x = 256,553,489.61/18,999.54
  6. Step 6: Final answer
    x = 13,503.14

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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.