Home / 20,512.04-28,306.80-11,558.70

Finding the Fourth Proportional to 20,512.04, 28,306.80 and 11,558.70

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Solution

The fourth proportional to 20,512.04, 28,306.80 and 11,558.70 is: 15,951.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.04 : 28,306.80 = 11,558.70 : x
  2. Step 2: Convert to fraction form
    20,512.04/28,306.80 = 11,558.70/x
  3. Step 3: Cross multiply
    20,512.04x = 28,306.80 × 11,558.70
  4. Step 4: Simplify right side
    20,512.04x = 327,189,809.16
  5. Step 5: Solve for x
    x = 327,189,809.16/20,512.04
  6. Step 6: Final answer
    x = 15,951.11

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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.