Home / 20,609,999.40-30,914,999.10-7,148,188.20

Finding the Fourth Proportional to 20,609,999.40, 30,914,999.10 and 7,148,188.20

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Solution

The fourth proportional to 20,609,999.40, 30,914,999.10 and 7,148,188.20 is: 10,722,282.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609,999.40 : 30,914,999.10 = 7,148,188.20 : x
  2. Step 2: Convert to fraction form
    20,609,999.40/30,914,999.10 = 7,148,188.20/x
  3. Step 3: Cross multiply
    20,609,999.40x = 30,914,999.10 × 7,148,188.20
  4. Step 4: Simplify right side
    20,609,999.40x = 220,986,231,769,630.62
  5. Step 5: Solve for x
    x = 220,986,231,769,630.62/20,609,999.40
  6. Step 6: Final answer
    x = 10,722,282.30

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1.5x scale

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.