Home / 20,510.43-28,304.06-11,558.85

Finding the Fourth Proportional to 20,510.43, 28,304.06 and 11,558.85

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Solution

The fourth proportional to 20,510.43, 28,304.06 and 11,558.85 is: 15,951.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.43 : 28,304.06 = 11,558.85 : x
  2. Step 2: Convert to fraction form
    20,510.43/28,304.06 = 11,558.85/x
  3. Step 3: Cross multiply
    20,510.43x = 28,304.06 × 11,558.85
  4. Step 4: Simplify right side
    20,510.43x = 327,162,326.14
  5. Step 5: Solve for x
    x = 327,162,326.14/20,510.43
  6. Step 6: Final answer
    x = 15,951.02

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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.