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Finding the Fourth Proportional to 18,862.28, 28,299.56 and 9,000.28

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Solution

The fourth proportional to 18,862.28, 28,299.56 and 9,000.28 is: 13,503.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,862.28 : 28,299.56 = 9,000.28 : x
  2. Step 2: Convert to fraction form
    18,862.28/28,299.56 = 9,000.28/x
  3. Step 3: Cross multiply
    18,862.28x = 28,299.56 × 9,000.28
  4. Step 4: Simplify right side
    18,862.28x = 254,703,963.88
  5. Step 5: Solve for x
    x = 254,703,963.88/18,862.28
  6. Step 6: Final answer
    x = 13,503.35

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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.