Home / 19,977,279.40-29,979,915.90-12,806,252.20

Finding the Fourth Proportional to 19,977,279.40, 29,979,915.90 and 12,806,252.20

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Solution

The fourth proportional to 19,977,279.40, 29,979,915.90 and 12,806,252.20 is: 19,218,350.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,977,279.40 : 29,979,915.90 = 12,806,252.20 : x
  2. Step 2: Convert to fraction form
    19,977,279.40/29,979,915.90 = 12,806,252.20/x
  3. Step 3: Cross multiply
    19,977,279.40x = 29,979,915.90 × 12,806,252.20
  4. Step 4: Simplify right side
    19,977,279.40x = 383,930,363,950,189.94
  5. Step 5: Solve for x
    x = 383,930,363,950,189.94/19,977,279.40
  6. Step 6: Final answer
    x = 19,218,350.82

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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.