Home / 28,211.13-42,316.84-8,489.55

Finding the Fourth Proportional to 28,211.13, 42,316.84 and 8,489.55

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Solution

The fourth proportional to 28,211.13, 42,316.84 and 8,489.55 is: 12,734.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.13 : 42,316.84 = 8,489.55 : x
  2. Step 2: Convert to fraction form
    28,211.13/42,316.84 = 8,489.55/x
  3. Step 3: Cross multiply
    28,211.13x = 42,316.84 × 8,489.55
  4. Step 4: Simplify right side
    28,211.13x = 359,250,939.63
  5. Step 5: Solve for x
    x = 359,250,939.63/28,211.13
  6. Step 6: Final answer
    x = 12,734.37

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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.