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Finding the Fourth Proportional to 15,574.62, 21,494.22 and 8,862.30

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Solution

The fourth proportional to 15,574.62, 21,494.22 and 8,862.30 is: 12,230.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,574.62 : 21,494.22 = 8,862.30 : x
  2. Step 2: Convert to fraction form
    15,574.62/21,494.22 = 8,862.30/x
  3. Step 3: Cross multiply
    15,574.62x = 21,494.22 × 8,862.30
  4. Step 4: Simplify right side
    15,574.62x = 190,488,225.91
  5. Step 5: Solve for x
    x = 190,488,225.91/15,574.62
  6. Step 6: Final answer
    x = 12,230.68

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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.