Home / 20,001.06-30,001.60-5,209.94

Finding the Fourth Proportional to 20,001.06, 30,001.60 and 5,209.94

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Solution

The fourth proportional to 20,001.06, 30,001.60 and 5,209.94 is: 7,814.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,001.06 : 30,001.60 = 5,209.94 : x
  2. Step 2: Convert to fraction form
    20,001.06/30,001.60 = 5,209.94/x
  3. Step 3: Cross multiply
    20,001.06x = 30,001.60 × 5,209.94
  4. Step 4: Simplify right side
    20,001.06x = 156,306,535.90
  5. Step 5: Solve for x
    x = 156,306,535.90/20,001.06
  6. Step 6: Final answer
    x = 7,814.91

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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.