Home / 20,387.91-30,580.50-5,595.60

Finding the Fourth Proportional to 20,387.91, 30,580.50 and 5,595.60

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Solution

The fourth proportional to 20,387.91, 30,580.50 and 5,595.60 is: 8,393.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.91 : 30,580.50 = 5,595.60 : x
  2. Step 2: Convert to fraction form
    20,387.91/30,580.50 = 5,595.60/x
  3. Step 3: Cross multiply
    20,387.91x = 30,580.50 × 5,595.60
  4. Step 4: Simplify right side
    20,387.91x = 171,116,245.80
  5. Step 5: Solve for x
    x = 171,116,245.80/20,387.91
  6. Step 6: Final answer
    x = 8,393.03

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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.