Home / 28,217.68-42,327.30-15,730.72

Finding the Fourth Proportional to 28,217.68, 42,327.30 and 15,730.72

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Solution

The fourth proportional to 28,217.68, 42,327.30 and 15,730.72 is: 23,596.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.68 : 42,327.30 = 15,730.72 : x
  2. Step 2: Convert to fraction form
    28,217.68/42,327.30 = 15,730.72/x
  3. Step 3: Cross multiply
    28,217.68x = 42,327.30 × 15,730.72
  4. Step 4: Simplify right side
    28,217.68x = 665,838,904.66
  5. Step 5: Solve for x
    x = 665,838,904.66/28,217.68
  6. Step 6: Final answer
    x = 23,596.51

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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.