Home / 13,319,154.78-18,380,449.85-7,207,583.28

Finding the Fourth Proportional to 13,319,154.78, 18,380,449.85 and 7,207,583.28

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Solution

The fourth proportional to 13,319,154.78, 18,380,449.85 and 7,207,583.28 is: 9,946,473.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319,154.78 : 18,380,449.85 = 7,207,583.28 : x
  2. Step 2: Convert to fraction form
    13,319,154.78/18,380,449.85 = 7,207,583.28/x
  3. Step 3: Cross multiply
    13,319,154.78x = 18,380,449.85 × 7,207,583.28
  4. Step 4: Simplify right side
    13,319,154.78x = 132,478,622,981,700.59
  5. Step 5: Solve for x
    x = 132,478,622,981,700.59/13,319,154.78
  6. Step 6: Final answer
    x = 9,946,473.72

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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.