Home / 21,561,520.80-32,342,281.20-20,711,215.20

Finding the Fourth Proportional to 21,561,520.80, 32,342,281.20 and 20,711,215.20

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Solution

The fourth proportional to 21,561,520.80, 32,342,281.20 and 20,711,215.20 is: 31,066,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561,520.80 : 32,342,281.20 = 20,711,215.20 : x
  2. Step 2: Convert to fraction form
    21,561,520.80/32,342,281.20 = 20,711,215.20/x
  3. Step 3: Cross multiply
    21,561,520.80x = 32,342,281.20 × 20,711,215.20
  4. Step 4: Simplify right side
    21,561,520.80x = 669,847,945,992,114.25
  5. Step 5: Solve for x
    x = 669,847,945,992,114.25/21,561,520.80
  6. Step 6: Final answer
    x = 31,066,822.80

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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.