Home / 28,144.85-42,228.90-12,341.70

Finding the Fourth Proportional to 28,144.85, 42,228.90 and 12,341.70

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Solution

The fourth proportional to 28,144.85, 42,228.90 and 12,341.70 is: 18,517.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.85 : 42,228.90 = 12,341.70 : x
  2. Step 2: Convert to fraction form
    28,144.85/42,228.90 = 12,341.70/x
  3. Step 3: Cross multiply
    28,144.85x = 42,228.90 × 12,341.70
  4. Step 4: Simplify right side
    28,144.85x = 521,176,415.13
  5. Step 5: Solve for x
    x = 521,176,415.13/28,144.85
  6. Step 6: Final answer
    x = 18,517.65

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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.