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Finding the Fourth Proportional to 37,456.25, 51,690.03 and 20,689.25

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Solution

The fourth proportional to 37,456.25, 51,690.03 and 20,689.25 is: 28,551.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,456.25 : 51,690.03 = 20,689.25 : x
  2. Step 2: Convert to fraction form
    37,456.25/51,690.03 = 20,689.25/x
  3. Step 3: Cross multiply
    37,456.25x = 51,690.03 × 20,689.25
  4. Step 4: Simplify right side
    37,456.25x = 1,069,427,953.18
  5. Step 5: Solve for x
    x = 1,069,427,953.18/37,456.25
  6. Step 6: Final answer
    x = 28,551.39

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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.