Home / 12,127,984.20-18,191,976.30-8,071,317.90

Finding the Fourth Proportional to 12,127,984.20, 18,191,976.30 and 8,071,317.90

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Solution

The fourth proportional to 12,127,984.20, 18,191,976.30 and 8,071,317.90 is: 12,106,976.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,984.20 : 18,191,976.30 = 8,071,317.90 : x
  2. Step 2: Convert to fraction form
    12,127,984.20/18,191,976.30 = 8,071,317.90/x
  3. Step 3: Cross multiply
    12,127,984.20x = 18,191,976.30 × 8,071,317.90
  4. Step 4: Simplify right side
    12,127,984.20x = 146,833,223,946,565.78
  5. Step 5: Solve for x
    x = 146,833,223,946,565.78/12,127,984.20
  6. Step 6: Final answer
    x = 12,106,976.85

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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.