Home / 28,226.91-38,953.12-15,306.20

Finding the Fourth Proportional to 28,226.91, 38,953.12 and 15,306.20

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Solution

The fourth proportional to 28,226.91, 38,953.12 and 15,306.20 is: 21,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,226.91 : 38,953.12 = 15,306.20 : x
  2. Step 2: Convert to fraction form
    28,226.91/38,953.12 = 15,306.20/x
  3. Step 3: Cross multiply
    28,226.91x = 38,953.12 × 15,306.20
  4. Step 4: Simplify right side
    28,226.91x = 596,224,245.34
  5. Step 5: Solve for x
    x = 596,224,245.34/28,226.91
  6. Step 6: Final answer
    x = 21,122.55

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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.