Home / 12,381,059.13-18,561,821.19-7,822,499.40

Finding the Fourth Proportional to 12,381,059.13, 18,561,821.19 and 7,822,499.40

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Solution

The fourth proportional to 12,381,059.13, 18,561,821.19 and 7,822,499.40 is: 11,727,577.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381,059.13 : 18,561,821.19 = 7,822,499.40 : x
  2. Step 2: Convert to fraction form
    12,381,059.13/18,561,821.19 = 7,822,499.40/x
  3. Step 3: Cross multiply
    12,381,059.13x = 18,561,821.19 × 7,822,499.40
  4. Step 4: Simplify right side
    12,381,059.13x = 145,199,835,121,682.31
  5. Step 5: Solve for x
    x = 145,199,835,121,682.31/12,381,059.13
  6. Step 6: Final answer
    x = 11,727,577.87

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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.