Home / 20,920,776.66-31,381,479.90-7,967,643.30

Finding the Fourth Proportional to 20,920,776.66, 31,381,479.90 and 7,967,643.30

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Solution

The fourth proportional to 20,920,776.66, 31,381,479.90 and 7,967,643.30 is: 11,951,584.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,920,776.66 : 31,381,479.90 = 7,967,643.30 : x
  2. Step 2: Convert to fraction form
    20,920,776.66/31,381,479.90 = 7,967,643.30/x
  3. Step 3: Cross multiply
    20,920,776.66x = 31,381,479.90 × 7,967,643.30
  4. Step 4: Simplify right side
    20,920,776.66x = 250,036,438,069,319.66
  5. Step 5: Solve for x
    x = 250,036,438,069,319.66/20,920,776.66
  6. Step 6: Final answer
    x = 11,951,584.88

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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.