Home / 28,207.20-42,294.60-8,482.80

Finding the Fourth Proportional to 28,207.20, 42,294.60 and 8,482.80

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Solution

The fourth proportional to 28,207.20, 42,294.60 and 8,482.80 is: 12,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,207.20 : 42,294.60 = 8,482.80 : x
  2. Step 2: Convert to fraction form
    28,207.20/42,294.60 = 8,482.80/x
  3. Step 3: Cross multiply
    28,207.20x = 42,294.60 × 8,482.80
  4. Step 4: Simplify right side
    28,207.20x = 358,776,632.88
  5. Step 5: Solve for x
    x = 358,776,632.88/28,207.20
  6. Step 6: Final answer
    x = 12,719.33

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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.