Home / 15,727.70-21,704.94-9,761.29

Finding the Fourth Proportional to 15,727.70, 21,704.94 and 9,761.29

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Solution

The fourth proportional to 15,727.70, 21,704.94 and 9,761.29 is: 13,471.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,727.70 : 21,704.94 = 9,761.29 : x
  2. Step 2: Convert to fraction form
    15,727.70/21,704.94 = 9,761.29/x
  3. Step 3: Cross multiply
    15,727.70x = 21,704.94 × 9,761.29
  4. Step 4: Simplify right side
    15,727.70x = 211,868,159.51
  5. Step 5: Solve for x
    x = 211,868,159.51/15,727.70
  6. Step 6: Final answer
    x = 13,471.02

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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.