Home / 18,287.39-25,236.29-10,221.23

Finding the Fourth Proportional to 18,287.39, 25,236.29 and 10,221.23

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Solution

The fourth proportional to 18,287.39, 25,236.29 and 10,221.23 is: 14,105.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.39 : 25,236.29 = 10,221.23 : x
  2. Step 2: Convert to fraction form
    18,287.39/25,236.29 = 10,221.23/x
  3. Step 3: Cross multiply
    18,287.39x = 25,236.29 × 10,221.23
  4. Step 4: Simplify right side
    18,287.39x = 257,946,013.08
  5. Step 5: Solve for x
    x = 257,946,013.08/18,287.39
  6. Step 6: Final answer
    x = 14,105.13

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Half scale
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Double scale
Find fourth proportional to 18,288.39, 25,237.67 and 10,222.23
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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.