Home / 21,000,414.90-28,986,977.82-12,182,094.63

Finding the Fourth Proportional to 21,000,414.90, 28,986,977.82 and 12,182,094.63

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Solution

The fourth proportional to 21,000,414.90, 28,986,977.82 and 12,182,094.63 is: 16,815,006.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,414.90 : 28,986,977.82 = 12,182,094.63 : x
  2. Step 2: Convert to fraction form
    21,000,414.90/28,986,977.82 = 12,182,094.63/x
  3. Step 3: Cross multiply
    21,000,414.90x = 28,986,977.82 × 12,182,094.63
  4. Step 4: Simplify right side
    21,000,414.90x = 353,122,106,840,951.12
  5. Step 5: Solve for x
    x = 353,122,106,840,951.12/21,000,414.90
  6. Step 6: Final answer
    x = 16,815,006.20

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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.