Home / 47,115.28-70,629-15,928.88

Finding the Fourth Proportional to 47,115.28, 70,629 and 15,928.88

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Solution

The fourth proportional to 47,115.28, 70,629 and 15,928.88 is: 23,878.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,115.28 : 70,629 = 15,928.88 : x
  2. Step 2: Convert to fraction form
    47,115.28/70,629 = 15,928.88/x
  3. Step 3: Cross multiply
    47,115.28x = 70,629 × 15,928.88
  4. Step 4: Simplify right side
    47,115.28x = 1,125,040,865.52
  5. Step 5: Solve for x
    x = 1,125,040,865.52/47,115.28
  6. Step 6: Final answer
    x = 23,878.47

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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.