Home / 18,125,613.90-27,188,420.85-12,740,345.10

Finding the Fourth Proportional to 18,125,613.90, 27,188,420.85 and 12,740,345.10

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Solution

The fourth proportional to 18,125,613.90, 27,188,420.85 and 12,740,345.10 is: 19,110,517.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,125,613.90 : 27,188,420.85 = 12,740,345.10 : x
  2. Step 2: Convert to fraction form
    18,125,613.90/27,188,420.85 = 12,740,345.10/x
  3. Step 3: Cross multiply
    18,125,613.90x = 27,188,420.85 × 12,740,345.10
  4. Step 4: Simplify right side
    18,125,613.90x = 346,389,864,353,035.38
  5. Step 5: Solve for x
    x = 346,389,864,353,035.38/18,125,613.90
  6. Step 6: Final answer
    x = 19,110,517.65

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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.