Home / 13,428,759.70-20,143,139.55-11,602,177.30

Finding the Fourth Proportional to 13,428,759.70, 20,143,139.55 and 11,602,177.30

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Solution

The fourth proportional to 13,428,759.70, 20,143,139.55 and 11,602,177.30 is: 17,403,265.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428,759.70 : 20,143,139.55 = 11,602,177.30 : x
  2. Step 2: Convert to fraction form
    13,428,759.70/20,143,139.55 = 11,602,177.30/x
  3. Step 3: Cross multiply
    13,428,759.70x = 20,143,139.55 × 11,602,177.30
  4. Step 4: Simplify right side
    13,428,759.70x = 233,704,276,437,742.25
  5. Step 5: Solve for x
    x = 233,704,276,437,742.25/13,428,759.70
  6. Step 6: Final answer
    x = 17,403,265.95

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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.