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Finding the Fourth Proportional to 11,487.50, 15,853.96 and 7,295.76

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Solution

The fourth proportional to 11,487.50, 15,853.96 and 7,295.76 is: 10,068.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,487.50 : 15,853.96 = 7,295.76 : x
  2. Step 2: Convert to fraction form
    11,487.50/15,853.96 = 7,295.76/x
  3. Step 3: Cross multiply
    11,487.50x = 15,853.96 × 7,295.76
  4. Step 4: Simplify right side
    11,487.50x = 115,666,687.21
  5. Step 5: Solve for x
    x = 115,666,687.21/11,487.50
  6. Step 6: Final answer
    x = 10,068.92

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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.