Home / 13,428,761.20-20,143,141.80-11,602,178.80

Finding the Fourth Proportional to 13,428,761.20, 20,143,141.80 and 11,602,178.80

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Solution

The fourth proportional to 13,428,761.20, 20,143,141.80 and 11,602,178.80 is: 17,403,268.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428,761.20 : 20,143,141.80 = 11,602,178.80 : x
  2. Step 2: Convert to fraction form
    13,428,761.20/20,143,141.80 = 11,602,178.80/x
  3. Step 3: Cross multiply
    13,428,761.20x = 20,143,141.80 × 11,602,178.80
  4. Step 4: Simplify right side
    13,428,761.20x = 233,704,332,757,353.88
  5. Step 5: Solve for x
    x = 233,704,332,757,353.88/13,428,761.20
  6. Step 6: Final answer
    x = 17,403,268.20

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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.