Home / 20,276.06-30,424.14-13,687.79

Finding the Fourth Proportional to 20,276.06, 30,424.14 and 13,687.79

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Solution

The fourth proportional to 20,276.06, 30,424.14 and 13,687.79 is: 20,538.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.06 : 30,424.14 = 13,687.79 : x
  2. Step 2: Convert to fraction form
    20,276.06/30,424.14 = 13,687.79/x
  3. Step 3: Cross multiply
    20,276.06x = 30,424.14 × 13,687.79
  4. Step 4: Simplify right side
    20,276.06x = 416,439,087.13
  5. Step 5: Solve for x
    x = 416,439,087.13/20,276.06
  6. Step 6: Final answer
    x = 20,538.47

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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.