Home / 28,181.30-42,256.13-19,306.65

Finding the Fourth Proportional to 28,181.30, 42,256.13 and 19,306.65

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Solution

The fourth proportional to 28,181.30, 42,256.13 and 19,306.65 is: 28,949.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.30 : 42,256.13 = 19,306.65 : x
  2. Step 2: Convert to fraction form
    28,181.30/42,256.13 = 19,306.65/x
  3. Step 3: Cross multiply
    28,181.30x = 42,256.13 × 19,306.65
  4. Step 4: Simplify right side
    28,181.30x = 815,824,215.73
  5. Step 5: Solve for x
    x = 815,824,215.73/28,181.30
  6. Step 6: Final answer
    x = 28,949.14

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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.