Home / 28,433.15-42,660.72-11,788.91

Finding the Fourth Proportional to 28,433.15, 42,660.72 and 11,788.91

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Solution

The fourth proportional to 28,433.15, 42,660.72 and 11,788.91 is: 17,687.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,433.15 : 42,660.72 = 11,788.91 : x
  2. Step 2: Convert to fraction form
    28,433.15/42,660.72 = 11,788.91/x
  3. Step 3: Cross multiply
    28,433.15x = 42,660.72 × 11,788.91
  4. Step 4: Simplify right side
    28,433.15x = 502,923,388.62
  5. Step 5: Solve for x
    x = 502,923,388.62/28,433.15
  6. Step 6: Final answer
    x = 17,687.92

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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.