Home / 28,179.28-42,232.74-10,628.20

Finding the Fourth Proportional to 28,179.28, 42,232.74 and 10,628.20

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Solution

The fourth proportional to 28,179.28, 42,232.74 and 10,628.20 is: 15,928.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.28 : 42,232.74 = 10,628.20 : x
  2. Step 2: Convert to fraction form
    28,179.28/42,232.74 = 10,628.20/x
  3. Step 3: Cross multiply
    28,179.28x = 42,232.74 × 10,628.20
  4. Step 4: Simplify right side
    28,179.28x = 448,858,007.27
  5. Step 5: Solve for x
    x = 448,858,007.27/28,179.28
  6. Step 6: Final answer
    x = 15,928.65

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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.