Home / 28,209.40-42,314.01-8,487.93

Finding the Fourth Proportional to 28,209.40, 42,314.01 and 8,487.93

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Solution

The fourth proportional to 28,209.40, 42,314.01 and 8,487.93 is: 12,731.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.40 : 42,314.01 = 8,487.93 : x
  2. Step 2: Convert to fraction form
    28,209.40/42,314.01 = 8,487.93/x
  3. Step 3: Cross multiply
    28,209.40x = 42,314.01 × 8,487.93
  4. Step 4: Simplify right side
    28,209.40x = 359,158,354.90
  5. Step 5: Solve for x
    x = 359,158,354.90/28,209.40
  6. Step 6: Final answer
    x = 12,731.87

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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.