Home / 19,178,725.20-28,784,417.40-7,827,320.40

Finding the Fourth Proportional to 19,178,725.20, 28,784,417.40 and 7,827,320.40

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Solution

The fourth proportional to 19,178,725.20, 28,784,417.40 and 7,827,320.40 is: 11,747,645.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,178,725.20 : 28,784,417.40 = 7,827,320.40 : x
  2. Step 2: Convert to fraction form
    19,178,725.20/28,784,417.40 = 7,827,320.40/x
  3. Step 3: Cross multiply
    19,178,725.20x = 28,784,417.40 × 7,827,320.40
  4. Step 4: Simplify right side
    19,178,725.20x = 225,304,857,517,134.97
  5. Step 5: Solve for x
    x = 225,304,857,517,134.97/19,178,725.20
  6. Step 6: Final answer
    x = 11,747,645.12

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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.