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Finding the Fourth Proportional to 21,165.29, 31,750.05 and 5,582.91

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Solution

The fourth proportional to 21,165.29, 31,750.05 and 5,582.91 is: 8,374.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,165.29 : 31,750.05 = 5,582.91 : x
  2. Step 2: Convert to fraction form
    21,165.29/31,750.05 = 5,582.91/x
  3. Step 3: Cross multiply
    21,165.29x = 31,750.05 × 5,582.91
  4. Step 4: Simplify right side
    21,165.29x = 177,257,671.65
  5. Step 5: Solve for x
    x = 177,257,671.65/21,165.29
  6. Step 6: Final answer
    x = 8,374.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.