Home / 21,002,851.80-31,504,277.70-12,358,078.20

Finding the Fourth Proportional to 21,002,851.80, 31,504,277.70 and 12,358,078.20

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Solution

The fourth proportional to 21,002,851.80, 31,504,277.70 and 12,358,078.20 is: 18,537,117.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,851.80 : 31,504,277.70 = 12,358,078.20 : x
  2. Step 2: Convert to fraction form
    21,002,851.80/31,504,277.70 = 12,358,078.20/x
  3. Step 3: Cross multiply
    21,002,851.80x = 31,504,277.70 × 12,358,078.20
  4. Step 4: Simplify right side
    21,002,851.80x = 389,332,327,451,116.12
  5. Step 5: Solve for x
    x = 389,332,327,451,116.12/21,002,851.80
  6. Step 6: Final answer
    x = 18,537,117.30

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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.