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Finding the Fourth Proportional to 37,557, 51,830.28 and 20,790

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Solution

The fourth proportional to 37,557, 51,830.28 and 20,790 is: 28,691.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,557 : 51,830.28 = 20,790 : x
  2. Step 2: Convert to fraction form
    37,557/51,830.28 = 20,790/x
  3. Step 3: Cross multiply
    37,557x = 51,830.28 × 20,790
  4. Step 4: Simplify right side
    37,557x = 1,077,551,521.20
  5. Step 5: Solve for x
    x = 1,077,551,521.20/37,557
  6. Step 6: Final answer
    x = 28,691.10

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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.