Home / 28,727.66-39,639.34-15,979.18

Finding the Fourth Proportional to 28,727.66, 39,639.34 and 15,979.18

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Solution

The fourth proportional to 28,727.66, 39,639.34 and 15,979.18 is: 22,048.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,727.66 : 39,639.34 = 15,979.18 : x
  2. Step 2: Convert to fraction form
    28,727.66/39,639.34 = 15,979.18/x
  3. Step 3: Cross multiply
    28,727.66x = 39,639.34 × 15,979.18
  4. Step 4: Simplify right side
    28,727.66x = 633,404,148.94
  5. Step 5: Solve for x
    x = 633,404,148.94/28,727.66
  6. Step 6: Final answer
    x = 22,048.58

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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.