Home / 18,145.28-25,040.12-10,187.51

Finding the Fourth Proportional to 18,145.28, 25,040.12 and 10,187.51

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Solution

The fourth proportional to 18,145.28, 25,040.12 and 10,187.51 is: 14,058.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145.28 : 25,040.12 = 10,187.51 : x
  2. Step 2: Convert to fraction form
    18,145.28/25,040.12 = 10,187.51/x
  3. Step 3: Cross multiply
    18,145.28x = 25,040.12 × 10,187.51
  4. Step 4: Simplify right side
    18,145.28x = 255,096,334.97
  5. Step 5: Solve for x
    x = 255,096,334.97/18,145.28
  6. Step 6: Final answer
    x = 14,058.55

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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.