Home / 20,842,139.80-31,291,203.30-13,302,530.20

Finding the Fourth Proportional to 20,842,139.80, 31,291,203.30 and 13,302,530.20

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Solution

The fourth proportional to 20,842,139.80, 31,291,203.30 and 13,302,530.20 is: 19,971,662.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842,139.80 : 31,291,203.30 = 13,302,530.20 : x
  2. Step 2: Convert to fraction form
    20,842,139.80/31,291,203.30 = 13,302,530.20/x
  3. Step 3: Cross multiply
    20,842,139.80x = 31,291,203.30 × 13,302,530.20
  4. Step 4: Simplify right side
    20,842,139.80x = 416,252,176,892,589.62
  5. Step 5: Solve for x
    x = 416,252,176,892,589.62/20,842,139.80
  6. Step 6: Final answer
    x = 19,971,662.26

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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.