Home / 12,291,778.55-18,428,118.50-7,964,686.28

Finding the Fourth Proportional to 12,291,778.55, 18,428,118.50 and 7,964,686.28

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Solution

The fourth proportional to 12,291,778.55, 18,428,118.50 and 7,964,686.28 is: 11,940,841.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291,778.55 : 18,428,118.50 = 7,964,686.28 : x
  2. Step 2: Convert to fraction form
    12,291,778.55/18,428,118.50 = 7,964,686.28/x
  3. Step 3: Cross multiply
    12,291,778.55x = 18,428,118.50 × 7,964,686.28
  4. Step 4: Simplify right side
    12,291,778.55x = 146,774,182,649,146.19
  5. Step 5: Solve for x
    x = 146,774,182,649,146.19/12,291,778.55
  6. Step 6: Final answer
    x = 11,940,841.76

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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.