Home / 12,248,588.80-18,372,883.20-5,428,429.30

Finding the Fourth Proportional to 12,248,588.80, 18,372,883.20 and 5,428,429.30

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Solution

The fourth proportional to 12,248,588.80, 18,372,883.20 and 5,428,429.30 is: 8,142,643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,248,588.80 : 18,372,883.20 = 5,428,429.30 : x
  2. Step 2: Convert to fraction form
    12,248,588.80/18,372,883.20 = 5,428,429.30/x
  3. Step 3: Cross multiply
    12,248,588.80x = 18,372,883.20 × 5,428,429.30
  4. Step 4: Simplify right side
    12,248,588.80x = 99,735,897,488,357.75
  5. Step 5: Solve for x
    x = 99,735,897,488,357.75/12,248,588.80
  6. Step 6: Final answer
    x = 8,142,643.95

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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.