Home / 20,532.29-28,334.81-11,578.95

Finding the Fourth Proportional to 20,532.29, 28,334.81 and 11,578.95

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Solution

The fourth proportional to 20,532.29, 28,334.81 and 11,578.95 is: 15,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.29 : 28,334.81 = 11,578.95 : x
  2. Step 2: Convert to fraction form
    20,532.29/28,334.81 = 11,578.95/x
  3. Step 3: Cross multiply
    20,532.29x = 28,334.81 × 11,578.95
  4. Step 4: Simplify right side
    20,532.29x = 328,087,377.20
  5. Step 5: Solve for x
    x = 328,087,377.20/20,532.29
  6. Step 6: Final answer
    x = 15,979.10

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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.