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Finding the Fourth Proportional to 18,877.06, 28,300.20 and 9,505.90

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Solution

The fourth proportional to 18,877.06, 28,300.20 and 9,505.90 is: 14,251.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,877.06 : 28,300.20 = 9,505.90 : x
  2. Step 2: Convert to fraction form
    18,877.06/28,300.20 = 9,505.90/x
  3. Step 3: Cross multiply
    18,877.06x = 28,300.20 × 9,505.90
  4. Step 4: Simplify right side
    18,877.06x = 269,018,871.18
  5. Step 5: Solve for x
    x = 269,018,871.18/18,877.06
  6. Step 6: Final answer
    x = 14,251.10

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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.