Home / 21,002,536.40-31,456,565.40-12,499,480.40

Finding the Fourth Proportional to 21,002,536.40, 31,456,565.40 and 12,499,480.40

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Solution

The fourth proportional to 21,002,536.40, 31,456,565.40 and 12,499,480.40 is: 18,721,106.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,536.40 : 31,456,565.40 = 12,499,480.40 : x
  2. Step 2: Convert to fraction form
    21,002,536.40/31,456,565.40 = 12,499,480.40/x
  3. Step 3: Cross multiply
    21,002,536.40x = 31,456,565.40 × 12,499,480.40
  4. Step 4: Simplify right side
    21,002,536.40x = 393,190,722,668,618.12
  5. Step 5: Solve for x
    x = 393,190,722,668,618.12/21,002,536.40
  6. Step 6: Final answer
    x = 18,721,106.59

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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.