Home / 20,443.38-28,210.45-11,492.23

Finding the Fourth Proportional to 20,443.38, 28,210.45 and 11,492.23

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Solution

The fourth proportional to 20,443.38, 28,210.45 and 11,492.23 is: 15,858.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.38 : 28,210.45 = 11,492.23 : x
  2. Step 2: Convert to fraction form
    20,443.38/28,210.45 = 11,492.23/x
  3. Step 3: Cross multiply
    20,443.38x = 28,210.45 × 11,492.23
  4. Step 4: Simplify right side
    20,443.38x = 324,200,979.80
  5. Step 5: Solve for x
    x = 324,200,979.80/20,443.38
  6. Step 6: Final answer
    x = 15,858.48

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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.