Home / 12,474,296.40-18,711,444.60-7,687,390.80

Finding the Fourth Proportional to 12,474,296.40, 18,711,444.60 and 7,687,390.80

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Solution

The fourth proportional to 12,474,296.40, 18,711,444.60 and 7,687,390.80 is: 11,531,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474,296.40 : 18,711,444.60 = 7,687,390.80 : x
  2. Step 2: Convert to fraction form
    12,474,296.40/18,711,444.60 = 7,687,390.80/x
  3. Step 3: Cross multiply
    12,474,296.40x = 18,711,444.60 × 7,687,390.80
  4. Step 4: Simplify right side
    12,474,296.40x = 143,842,187,072,749.69
  5. Step 5: Solve for x
    x = 143,842,187,072,749.69/12,474,296.40
  6. Step 6: Final answer
    x = 11,531,086.20

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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.