Home / 20,148.44-30,191.88-8,455.28

Finding the Fourth Proportional to 20,148.44, 30,191.88 and 8,455.28

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Solution

The fourth proportional to 20,148.44, 30,191.88 and 8,455.28 is: 12,670.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.44 : 30,191.88 = 8,455.28 : x
  2. Step 2: Convert to fraction form
    20,148.44/30,191.88 = 8,455.28/x
  3. Step 3: Cross multiply
    20,148.44x = 30,191.88 × 8,455.28
  4. Step 4: Simplify right side
    20,148.44x = 255,280,799.13
  5. Step 5: Solve for x
    x = 255,280,799.13/20,148.44
  6. Step 6: Final answer
    x = 12,670.00

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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.