Home / 20,451,221.56-28,232,912.82-12,718,754.92

Finding the Fourth Proportional to 20,451,221.56, 28,232,912.82 and 12,718,754.92

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Solution

The fourth proportional to 20,451,221.56, 28,232,912.82 and 12,718,754.92 is: 17,558,242.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451,221.56 : 28,232,912.82 = 12,718,754.92 : x
  2. Step 2: Convert to fraction form
    20,451,221.56/28,232,912.82 = 12,718,754.92/x
  3. Step 3: Cross multiply
    20,451,221.56x = 28,232,912.82 × 12,718,754.92
  4. Step 4: Simplify right side
    20,451,221.56x = 359,087,498,835,306.06
  5. Step 5: Solve for x
    x = 359,087,498,835,306.06/20,451,221.56
  6. Step 6: Final answer
    x = 17,558,242.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.