Home / 28,344.78-39,117.33-15,769.80

Finding the Fourth Proportional to 28,344.78, 39,117.33 and 15,769.80

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Solution

The fourth proportional to 28,344.78, 39,117.33 and 15,769.80 is: 21,763.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,344.78 : 39,117.33 = 15,769.80 : x
  2. Step 2: Convert to fraction form
    28,344.78/39,117.33 = 15,769.80/x
  3. Step 3: Cross multiply
    28,344.78x = 39,117.33 × 15,769.80
  4. Step 4: Simplify right side
    28,344.78x = 616,872,470.63
  5. Step 5: Solve for x
    x = 616,872,470.63/28,344.78
  6. Step 6: Final answer
    x = 21,763.18

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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.