Home / 15,304,465.81-21,119,193.92-8,428,947.87

Finding the Fourth Proportional to 15,304,465.81, 21,119,193.92 and 8,428,947.87

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Solution

The fourth proportional to 15,304,465.81, 21,119,193.92 and 8,428,947.87 is: 11,631,414.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304,465.81 : 21,119,193.92 = 8,428,947.87 : x
  2. Step 2: Convert to fraction form
    15,304,465.81/21,119,193.92 = 8,428,947.87/x
  3. Step 3: Cross multiply
    15,304,465.81x = 21,119,193.92 × 8,428,947.87
  4. Step 4: Simplify right side
    15,304,465.81x = 178,012,584,565,956.19
  5. Step 5: Solve for x
    x = 178,012,584,565,956.19/15,304,465.81
  6. Step 6: Final answer
    x = 11,631,414.44

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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.