Home / 20,728,337.60-31,080,842.40-7,949,259.20

Finding the Fourth Proportional to 20,728,337.60, 31,080,842.40 and 7,949,259.20

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Solution

The fourth proportional to 20,728,337.60, 31,080,842.40 and 7,949,259.20 is: 11,919,415.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,337.60 : 31,080,842.40 = 7,949,259.20 : x
  2. Step 2: Convert to fraction form
    20,728,337.60/31,080,842.40 = 7,949,259.20/x
  3. Step 3: Cross multiply
    20,728,337.60x = 31,080,842.40 × 7,949,259.20
  4. Step 4: Simplify right side
    20,728,337.60x = 247,069,672,391,950.06
  5. Step 5: Solve for x
    x = 247,069,672,391,950.06/20,728,337.60
  6. Step 6: Final answer
    x = 11,919,415.69

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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.