Home / 28,076.38-42,116.40-8,353.28

Finding the Fourth Proportional to 28,076.38, 42,116.40 and 8,353.28

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Solution

The fourth proportional to 28,076.38, 42,116.40 and 8,353.28 is: 12,530.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076.38 : 42,116.40 = 8,353.28 : x
  2. Step 2: Convert to fraction form
    28,076.38/42,116.40 = 8,353.28/x
  3. Step 3: Cross multiply
    28,076.38x = 42,116.40 × 8,353.28
  4. Step 4: Simplify right side
    28,076.38x = 351,810,187.08
  5. Step 5: Solve for x
    x = 351,810,187.08/28,076.38
  6. Step 6: Final answer
    x = 12,530.47

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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.