Home / 15,318,217.20-21,139,268.40-8,442,716.88

Finding the Fourth Proportional to 15,318,217.20, 21,139,268.40 and 8,442,716.88

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Solution

The fourth proportional to 15,318,217.20, 21,139,268.40 and 8,442,716.88 is: 11,651,020.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318,217.20 : 21,139,268.40 = 8,442,716.88 : x
  2. Step 2: Convert to fraction form
    15,318,217.20/21,139,268.40 = 8,442,716.88/x
  3. Step 3: Cross multiply
    15,318,217.20x = 21,139,268.40 × 8,442,716.88
  4. Step 4: Simplify right side
    15,318,217.20x = 178,472,858,151,530.59
  5. Step 5: Solve for x
    x = 178,472,858,151,530.59/15,318,217.20
  6. Step 6: Final answer
    x = 11,651,020.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.