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Finding the Fourth Proportional to 26,071.11, 35,978.72 and 15,456.87

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Solution

The fourth proportional to 26,071.11, 35,978.72 and 15,456.87 is: 21,330.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,071.11 : 35,978.72 = 15,456.87 : x
  2. Step 2: Convert to fraction form
    26,071.11/35,978.72 = 15,456.87/x
  3. Step 3: Cross multiply
    26,071.11x = 35,978.72 × 15,456.87
  4. Step 4: Simplify right side
    26,071.11x = 556,118,320.52
  5. Step 5: Solve for x
    x = 556,118,320.52/26,071.11
  6. Step 6: Final answer
    x = 21,330.83

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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.