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Finding the Fourth Proportional to 11,487.44, 15,862.02 and 9,363.28

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Solution

The fourth proportional to 11,487.44, 15,862.02 and 9,363.28 is: 12,928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,487.44 : 15,862.02 = 9,363.28 : x
  2. Step 2: Convert to fraction form
    11,487.44/15,862.02 = 9,363.28/x
  3. Step 3: Cross multiply
    11,487.44x = 15,862.02 × 9,363.28
  4. Step 4: Simplify right side
    11,487.44x = 148,520,534.63
  5. Step 5: Solve for x
    x = 148,520,534.63/11,487.44
  6. Step 6: Final answer
    x = 12,928.95

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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.