Home / 18,135.28-25,028.40-10,581

Finding the Fourth Proportional to 18,135.28, 25,028.40 and 10,581

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Solution

The fourth proportional to 18,135.28, 25,028.40 and 10,581 is: 14,602.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.28 : 25,028.40 = 10,581 : x
  2. Step 2: Convert to fraction form
    18,135.28/25,028.40 = 10,581/x
  3. Step 3: Cross multiply
    18,135.28x = 25,028.40 × 10,581
  4. Step 4: Simplify right side
    18,135.28x = 264,825,500.40
  5. Step 5: Solve for x
    x = 264,825,500.40/18,135.28
  6. Step 6: Final answer
    x = 14,602.78

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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.