Home / 20,570.32-30,855.65-4,987.95

Finding the Fourth Proportional to 20,570.32, 30,855.65 and 4,987.95

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Solution

The fourth proportional to 20,570.32, 30,855.65 and 4,987.95 is: 7,481.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.32 : 30,855.65 = 4,987.95 : x
  2. Step 2: Convert to fraction form
    20,570.32/30,855.65 = 4,987.95/x
  3. Step 3: Cross multiply
    20,570.32x = 30,855.65 × 4,987.95
  4. Step 4: Simplify right side
    20,570.32x = 153,906,439.42
  5. Step 5: Solve for x
    x = 153,906,439.42/20,570.32
  6. Step 6: Final answer
    x = 7,481.97

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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.