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Finding the Fourth Proportional to 37,988.76, 52,424.64 and 21,221.76

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Solution

The fourth proportional to 37,988.76, 52,424.64 and 21,221.76 is: 29,286.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,988.76 : 52,424.64 = 21,221.76 : x
  2. Step 2: Convert to fraction form
    37,988.76/52,424.64 = 21,221.76/x
  3. Step 3: Cross multiply
    37,988.76x = 52,424.64 × 21,221.76
  4. Step 4: Simplify right side
    37,988.76x = 1,112,543,128.17
  5. Step 5: Solve for x
    x = 1,112,543,128.17/37,988.76
  6. Step 6: Final answer
    x = 29,286.11

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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.