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Finding the Fourth Proportional to 37,486.91, 51,730.97 and 20,491.20

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Solution

The fourth proportional to 37,486.91, 51,730.97 and 20,491.20 is: 28,277.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,486.91 : 51,730.97 = 20,491.20 : x
  2. Step 2: Convert to fraction form
    37,486.91/51,730.97 = 20,491.20/x
  3. Step 3: Cross multiply
    37,486.91x = 51,730.97 × 20,491.20
  4. Step 4: Simplify right side
    37,486.91x = 1,060,029,652.46
  5. Step 5: Solve for x
    x = 1,060,029,652.46/37,486.91
  6. Step 6: Final answer
    x = 28,277.33

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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.