Home / 28,182.78-38,892.94-15,436.66

Finding the Fourth Proportional to 28,182.78, 38,892.94 and 15,436.66

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Solution

The fourth proportional to 28,182.78, 38,892.94 and 15,436.66 is: 21,302.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,182.78 : 38,892.94 = 15,436.66 : x
  2. Step 2: Convert to fraction form
    28,182.78/38,892.94 = 15,436.66/x
  3. Step 3: Cross multiply
    28,182.78x = 38,892.94 × 15,436.66
  4. Step 4: Simplify right side
    28,182.78x = 600,377,091.18
  5. Step 5: Solve for x
    x = 600,377,091.18/28,182.78
  6. Step 6: Final answer
    x = 21,302.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.