Home / 18,929,732.72-28,399,387.08-5,282,876.72

Finding the Fourth Proportional to 18,929,732.72, 28,399,387.08 and 5,282,876.72

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Solution

The fourth proportional to 18,929,732.72, 28,399,387.08 and 5,282,876.72 is: 7,925,651.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929,732.72 : 28,399,387.08 = 5,282,876.72 : x
  2. Step 2: Convert to fraction form
    18,929,732.72/28,399,387.08 = 5,282,876.72/x
  3. Step 3: Cross multiply
    18,929,732.72x = 28,399,387.08 × 5,282,876.72
  4. Step 4: Simplify right side
    18,929,732.72x = 150,030,460,867,200.75
  5. Step 5: Solve for x
    x = 150,030,460,867,200.75/18,929,732.72
  6. Step 6: Final answer
    x = 7,925,651.31

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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.