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Finding the Fourth Proportional to 15,761.52, 23,656.84 and 7,975.76

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Solution

The fourth proportional to 15,761.52, 23,656.84 and 7,975.76 is: 11,971.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,761.52 : 23,656.84 = 7,975.76 : x
  2. Step 2: Convert to fraction form
    15,761.52/23,656.84 = 7,975.76/x
  3. Step 3: Cross multiply
    15,761.52x = 23,656.84 × 7,975.76
  4. Step 4: Simplify right side
    15,761.52x = 188,681,278.20
  5. Step 5: Solve for x
    x = 188,681,278.20/15,761.52
  6. Step 6: Final answer
    x = 11,971.01

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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.