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Finding the Fourth Proportional to 11,353.68, 15,663.51 and 7,159.50

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Solution

The fourth proportional to 11,353.68, 15,663.51 and 7,159.50 is: 9,877.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,353.68 : 15,663.51 = 7,159.50 : x
  2. Step 2: Convert to fraction form
    11,353.68/15,663.51 = 7,159.50/x
  3. Step 3: Cross multiply
    11,353.68x = 15,663.51 × 7,159.50
  4. Step 4: Simplify right side
    11,353.68x = 112,142,899.85
  5. Step 5: Solve for x
    x = 112,142,899.85/11,353.68
  6. Step 6: Final answer
    x = 9,877.23

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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.