Home / 28,123.20-42,178.32-8,401.32

Finding the Fourth Proportional to 28,123.20, 42,178.32 and 8,401.32

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Solution

The fourth proportional to 28,123.20, 42,178.32 and 8,401.32 is: 12,600.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.20 : 42,178.32 = 8,401.32 : x
  2. Step 2: Convert to fraction form
    28,123.20/42,178.32 = 8,401.32/x
  3. Step 3: Cross multiply
    28,123.20x = 42,178.32 × 8,401.32
  4. Step 4: Simplify right side
    28,123.20x = 354,353,563.38
  5. Step 5: Solve for x
    x = 354,353,563.38/28,123.20
  6. Step 6: Final answer
    x = 12,600.04

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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.