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Finding the Fourth Proportional to 18,854.88, 28,299.96 and 9,000.96

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Solution

The fourth proportional to 18,854.88, 28,299.96 and 9,000.96 is: 13,509.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.88 : 28,299.96 = 9,000.96 : x
  2. Step 2: Convert to fraction form
    18,854.88/28,299.96 = 9,000.96/x
  3. Step 3: Cross multiply
    18,854.88x = 28,299.96 × 9,000.96
  4. Step 4: Simplify right side
    18,854.88x = 254,726,807.96
  5. Step 5: Solve for x
    x = 254,726,807.96/18,854.88
  6. Step 6: Final answer
    x = 13,509.86

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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.