Home / 28,077.28-42,119.52-8,356.48

Finding the Fourth Proportional to 28,077.28, 42,119.52 and 8,356.48

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Solution

The fourth proportional to 28,077.28, 42,119.52 and 8,356.48 is: 12,535.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,077.28 : 42,119.52 = 8,356.48 : x
  2. Step 2: Convert to fraction form
    28,077.28/42,119.52 = 8,356.48/x
  3. Step 3: Cross multiply
    28,077.28x = 42,119.52 × 8,356.48
  4. Step 4: Simplify right side
    28,077.28x = 351,970,926.49
  5. Step 5: Solve for x
    x = 351,970,926.49/28,077.28
  6. Step 6: Final answer
    x = 12,535.79

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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.