Home / 18,219.38-25,142.78-10,564.13

Finding the Fourth Proportional to 18,219.38, 25,142.78 and 10,564.13

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Solution

The fourth proportional to 18,219.38, 25,142.78 and 10,564.13 is: 14,578.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.38 : 25,142.78 = 10,564.13 : x
  2. Step 2: Convert to fraction form
    18,219.38/25,142.78 = 10,564.13/x
  3. Step 3: Cross multiply
    18,219.38x = 25,142.78 × 10,564.13
  4. Step 4: Simplify right side
    18,219.38x = 265,611,417.95
  5. Step 5: Solve for x
    x = 265,611,417.95/18,219.38
  6. Step 6: Final answer
    x = 14,578.51

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Half scale
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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.