Home / 28,007.65-38,650.13-15,432.85

Finding the Fourth Proportional to 28,007.65, 38,650.13 and 15,432.85

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Solution

The fourth proportional to 28,007.65, 38,650.13 and 15,432.85 is: 21,297.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.65 : 38,650.13 = 15,432.85 : x
  2. Step 2: Convert to fraction form
    28,007.65/38,650.13 = 15,432.85/x
  3. Step 3: Cross multiply
    28,007.65x = 38,650.13 × 15,432.85
  4. Step 4: Simplify right side
    28,007.65x = 596,481,581.61
  5. Step 5: Solve for x
    x = 596,481,581.61/28,007.65
  6. Step 6: Final answer
    x = 21,297.09

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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.