Home / 13,601,456.20-18,765,261.66-7,720,389.64

Finding the Fourth Proportional to 13,601,456.20, 18,765,261.66 and 7,720,389.64

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Solution

The fourth proportional to 13,601,456.20, 18,765,261.66 and 7,720,389.64 is: 10,651,442.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,601,456.20 : 18,765,261.66 = 7,720,389.64 : x
  2. Step 2: Convert to fraction form
    13,601,456.20/18,765,261.66 = 7,720,389.64/x
  3. Step 3: Cross multiply
    13,601,456.20x = 18,765,261.66 × 7,720,389.64
  4. Step 4: Simplify right side
    13,601,456.20x = 144,875,131,711,753.19
  5. Step 5: Solve for x
    x = 144,875,131,711,753.19/13,601,456.20
  6. Step 6: Final answer
    x = 10,651,442.73

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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.