Home / 12,121,693.20-18,183,414.60-7,319,041.20

Finding the Fourth Proportional to 12,121,693.20, 18,183,414.60 and 7,319,041.20

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Solution

The fourth proportional to 12,121,693.20, 18,183,414.60 and 7,319,041.20 is: 10,979,090.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121,693.20 : 18,183,414.60 = 7,319,041.20 : x
  2. Step 2: Convert to fraction form
    12,121,693.20/18,183,414.60 = 7,319,041.20/x
  3. Step 3: Cross multiply
    12,121,693.20x = 18,183,414.60 × 7,319,041.20
  4. Step 4: Simplify right side
    12,121,693.20x = 133,085,160,614,081.53
  5. Step 5: Solve for x
    x = 133,085,160,614,081.53/12,121,693.20
  6. Step 6: Final answer
    x = 10,979,090.00

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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.