Home / 15,741.76-21,721.32-8,934.73

Finding the Fourth Proportional to 15,741.76, 21,721.32 and 8,934.73

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Solution

The fourth proportional to 15,741.76, 21,721.32 and 8,934.73 is: 12,328.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.76 : 21,721.32 = 8,934.73 : x
  2. Step 2: Convert to fraction form
    15,741.76/21,721.32 = 8,934.73/x
  3. Step 3: Cross multiply
    15,741.76x = 21,721.32 × 8,934.73
  4. Step 4: Simplify right side
    15,741.76x = 194,074,129.44
  5. Step 5: Solve for x
    x = 194,074,129.44/15,741.76
  6. Step 6: Final answer
    x = 12,328.62

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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.