Home / 15,737.49-21,716.96-8,663.76

Finding the Fourth Proportional to 15,737.49, 21,716.96 and 8,663.76

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Solution

The fourth proportional to 15,737.49, 21,716.96 and 8,663.76 is: 11,955.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,737.49 : 21,716.96 = 8,663.76 : x
  2. Step 2: Convert to fraction form
    15,737.49/21,716.96 = 8,663.76/x
  3. Step 3: Cross multiply
    15,737.49x = 21,716.96 × 8,663.76
  4. Step 4: Simplify right side
    15,737.49x = 188,150,486.05
  5. Step 5: Solve for x
    x = 188,150,486.05/15,737.49
  6. Step 6: Final answer
    x = 11,955.56

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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.