Home / 28,721.68-39,635.88-16,146.48

Finding the Fourth Proportional to 28,721.68, 39,635.88 and 16,146.48

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Solution

The fourth proportional to 28,721.68, 39,635.88 and 16,146.48 is: 22,282.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.68 : 39,635.88 = 16,146.48 : x
  2. Step 2: Convert to fraction form
    28,721.68/39,635.88 = 16,146.48/x
  3. Step 3: Cross multiply
    28,721.68x = 39,635.88 × 16,146.48
  4. Step 4: Simplify right side
    28,721.68x = 639,979,943.70
  5. Step 5: Solve for x
    x = 639,979,943.70/28,721.68
  6. Step 6: Final answer
    x = 22,282.12

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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.