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Finding the Fourth Proportional to 25,758,414.80, 38,642,287.80 and 12,946,677.20

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Solution

The fourth proportional to 25,758,414.80, 38,642,287.80 and 12,946,677.20 is: 19,422,360.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,758,414.80 : 38,642,287.80 = 12,946,677.20 : x
  2. Step 2: Convert to fraction form
    25,758,414.80/38,642,287.80 = 12,946,677.20/x
  3. Step 3: Cross multiply
    25,758,414.80x = 38,642,287.80 × 12,946,677.20
  4. Step 4: Simplify right side
    25,758,414.80x = 500,289,226,416,098.06
  5. Step 5: Solve for x
    x = 500,289,226,416,098.06/25,758,414.80
  6. Step 6: Final answer
    x = 19,422,360.82

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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.