Home / 28,156.52-38,860.12-16,217.56

Finding the Fourth Proportional to 28,156.52, 38,860.12 and 16,217.56

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Solution

The fourth proportional to 28,156.52, 38,860.12 and 16,217.56 is: 22,382.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156.52 : 38,860.12 = 16,217.56 : x
  2. Step 2: Convert to fraction form
    28,156.52/38,860.12 = 16,217.56/x
  3. Step 3: Cross multiply
    28,156.52x = 38,860.12 × 16,217.56
  4. Step 4: Simplify right side
    28,156.52x = 630,216,327.71
  5. Step 5: Solve for x
    x = 630,216,327.71/28,156.52
  6. Step 6: Final answer
    x = 22,382.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.