Home / 15,727.80-21,706.52-14,399.16

Finding the Fourth Proportional to 15,727.80, 21,706.52 and 14,399.16

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Solution

The fourth proportional to 15,727.80, 21,706.52 and 14,399.16 is: 19,872.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,727.80 : 21,706.52 = 14,399.16 : x
  2. Step 2: Convert to fraction form
    15,727.80/21,706.52 = 14,399.16/x
  3. Step 3: Cross multiply
    15,727.80x = 21,706.52 × 14,399.16
  4. Step 4: Simplify right side
    15,727.80x = 312,555,654.52
  5. Step 5: Solve for x
    x = 312,555,654.52/15,727.80
  6. Step 6: Final answer
    x = 19,872.81

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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.