Home / 20,538.72-30,809.61-5,747.45

Finding the Fourth Proportional to 20,538.72, 30,809.61 and 5,747.45

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Solution

The fourth proportional to 20,538.72, 30,809.61 and 5,747.45 is: 8,621.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.72 : 30,809.61 = 5,747.45 : x
  2. Step 2: Convert to fraction form
    20,538.72/30,809.61 = 5,747.45/x
  3. Step 3: Cross multiply
    20,538.72x = 30,809.61 × 5,747.45
  4. Step 4: Simplify right side
    20,538.72x = 177,076,538.95
  5. Step 5: Solve for x
    x = 177,076,538.95/20,538.72
  6. Step 6: Final answer
    x = 8,621.60

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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.