Home / 15,727.34-21,691.44-9,755.66

Finding the Fourth Proportional to 15,727.34, 21,691.44 and 9,755.66

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Solution

The fourth proportional to 15,727.34, 21,691.44 and 9,755.66 is: 13,455.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,727.34 : 21,691.44 = 9,755.66 : x
  2. Step 2: Convert to fraction form
    15,727.34/21,691.44 = 9,755.66/x
  3. Step 3: Cross multiply
    15,727.34x = 21,691.44 × 9,755.66
  4. Step 4: Simplify right side
    15,727.34x = 211,614,313.55
  5. Step 5: Solve for x
    x = 211,614,313.55/15,727.34
  6. Step 6: Final answer
    x = 13,455.19

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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.