Home / 15,707.20-21,679.66-8,996.69

Finding the Fourth Proportional to 15,707.20, 21,679.66 and 8,996.69

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Solution

The fourth proportional to 15,707.20, 21,679.66 and 8,996.69 is: 12,417.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.20 : 21,679.66 = 8,996.69 : x
  2. Step 2: Convert to fraction form
    15,707.20/21,679.66 = 8,996.69/x
  3. Step 3: Cross multiply
    15,707.20x = 21,679.66 × 8,996.69
  4. Step 4: Simplify right side
    15,707.20x = 195,045,180.33
  5. Step 5: Solve for x
    x = 195,045,180.33/15,707.20
  6. Step 6: Final answer
    x = 12,417.57

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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.