Home / 12,985,808.70-19,485,711.45-5,413,539.90

Finding the Fourth Proportional to 12,985,808.70, 19,485,711.45 and 5,413,539.90

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Solution

The fourth proportional to 12,985,808.70, 19,485,711.45 and 5,413,539.90 is: 8,123,227.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985,808.70 : 19,485,711.45 = 5,413,539.90 : x
  2. Step 2: Convert to fraction form
    12,985,808.70/19,485,711.45 = 5,413,539.90/x
  3. Step 3: Cross multiply
    12,985,808.70x = 19,485,711.45 × 5,413,539.90
  4. Step 4: Simplify right side
    12,985,808.70x = 105,486,676,414,461.86
  5. Step 5: Solve for x
    x = 105,486,676,414,461.86/12,985,808.70
  6. Step 6: Final answer
    x = 8,123,227.35

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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.