Home / 21,305,456.20-31,971,306.30-9,180,728.20

Finding the Fourth Proportional to 21,305,456.20, 31,971,306.30 and 9,180,728.20

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Solution

The fourth proportional to 21,305,456.20, 31,971,306.30 and 9,180,728.20 is: 13,776,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305,456.20 : 31,971,306.30 = 9,180,728.20 : x
  2. Step 2: Convert to fraction form
    21,305,456.20/31,971,306.30 = 9,180,728.20/x
  3. Step 3: Cross multiply
    21,305,456.20x = 31,971,306.30 × 9,180,728.20
  4. Step 4: Simplify right side
    21,305,456.20x = 293,519,873,339,247.62
  5. Step 5: Solve for x
    x = 293,519,873,339,247.62/21,305,456.20
  6. Step 6: Final answer
    x = 13,776,746.70

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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.