Home / 20,722,209.80-31,083,314.70-13,182,600.20

Finding the Fourth Proportional to 20,722,209.80, 31,083,314.70 and 13,182,600.20

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Solution

The fourth proportional to 20,722,209.80, 31,083,314.70 and 13,182,600.20 is: 19,773,900.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722,209.80 : 31,083,314.70 = 13,182,600.20 : x
  2. Step 2: Convert to fraction form
    20,722,209.80/31,083,314.70 = 13,182,600.20/x
  3. Step 3: Cross multiply
    20,722,209.80x = 31,083,314.70 × 13,182,600.20
  4. Step 4: Simplify right side
    20,722,209.80x = 409,758,910,580,882.94
  5. Step 5: Solve for x
    x = 409,758,910,580,882.94/20,722,209.80
  6. Step 6: Final answer
    x = 19,773,900.30

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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.