Home / 20,176.60-30,337.80-19,739.20

Finding the Fourth Proportional to 20,176.60, 30,337.80 and 19,739.20

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Solution

The fourth proportional to 20,176.60, 30,337.80 and 19,739.20 is: 29,680.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,176.60 : 30,337.80 = 19,739.20 : x
  2. Step 2: Convert to fraction form
    20,176.60/30,337.80 = 19,739.20/x
  3. Step 3: Cross multiply
    20,176.60x = 30,337.80 × 19,739.20
  4. Step 4: Simplify right side
    20,176.60x = 598,843,901.76
  5. Step 5: Solve for x
    x = 598,843,901.76/20,176.60
  6. Step 6: Final answer
    x = 29,680.12

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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.