Home / 28,340.28-39,109.56-15,767.52

Finding the Fourth Proportional to 28,340.28, 39,109.56 and 15,767.52

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Solution

The fourth proportional to 28,340.28, 39,109.56 and 15,767.52 is: 21,759.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,340.28 : 39,109.56 = 15,767.52 : x
  2. Step 2: Convert to fraction form
    28,340.28/39,109.56 = 15,767.52/x
  3. Step 3: Cross multiply
    28,340.28x = 39,109.56 × 15,767.52
  4. Step 4: Simplify right side
    28,340.28x = 616,660,769.49
  5. Step 5: Solve for x
    x = 616,660,769.49/28,340.28
  6. Step 6: Final answer
    x = 21,759.16

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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.