Home / 28,112.40-42,156.23-14,961.65

Finding the Fourth Proportional to 28,112.40, 42,156.23 and 14,961.65

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Solution

The fourth proportional to 28,112.40, 42,156.23 and 14,961.65 is: 22,435.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.40 : 42,156.23 = 14,961.65 : x
  2. Step 2: Convert to fraction form
    28,112.40/42,156.23 = 14,961.65/x
  3. Step 3: Cross multiply
    28,112.40x = 42,156.23 × 14,961.65
  4. Step 4: Simplify right side
    28,112.40x = 630,726,472.99
  5. Step 5: Solve for x
    x = 630,726,472.99/28,112.40
  6. Step 6: Final answer
    x = 22,435.88

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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.