Home / 20,154.40-30,242.40-8,468.80

Finding the Fourth Proportional to 20,154.40, 30,242.40 and 8,468.80

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Solution

The fourth proportional to 20,154.40, 30,242.40 and 8,468.80 is: 12,707.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.40 : 30,242.40 = 8,468.80 : x
  2. Step 2: Convert to fraction form
    20,154.40/30,242.40 = 8,468.80/x
  3. Step 3: Cross multiply
    20,154.40x = 30,242.40 × 8,468.80
  4. Step 4: Simplify right side
    20,154.40x = 256,116,837.12
  5. Step 5: Solve for x
    x = 256,116,837.12/20,154.40
  6. Step 6: Final answer
    x = 12,707.74

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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.