Home / 15,769.11-21,761.07-8,695.53

Finding the Fourth Proportional to 15,769.11, 21,761.07 and 8,695.53

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Solution

The fourth proportional to 15,769.11, 21,761.07 and 8,695.53 is: 11,999.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.11 : 21,761.07 = 8,695.53 : x
  2. Step 2: Convert to fraction form
    15,769.11/21,761.07 = 8,695.53/x
  3. Step 3: Cross multiply
    15,769.11x = 21,761.07 × 8,695.53
  4. Step 4: Simplify right side
    15,769.11x = 189,224,037.02
  5. Step 5: Solve for x
    x = 189,224,037.02/15,769.11
  6. Step 6: Final answer
    x = 11,999.66

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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.