Home / 28,718.28-39,632.15-17,389.89

Finding the Fourth Proportional to 28,718.28, 39,632.15 and 17,389.89

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Solution

The fourth proportional to 28,718.28, 39,632.15 and 17,389.89 is: 23,998.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.28 : 39,632.15 = 17,389.89 : x
  2. Step 2: Convert to fraction form
    28,718.28/39,632.15 = 17,389.89/x
  3. Step 3: Cross multiply
    28,718.28x = 39,632.15 × 17,389.89
  4. Step 4: Simplify right side
    28,718.28x = 689,198,772.44
  5. Step 5: Solve for x
    x = 689,198,772.44/28,718.28
  6. Step 6: Final answer
    x = 23,998.61

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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.