Home / 18,425.39-25,401.28-15,581.35

Finding the Fourth Proportional to 18,425.39, 25,401.28 and 15,581.35

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Solution

The fourth proportional to 18,425.39, 25,401.28 and 15,581.35 is: 21,480.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.39 : 25,401.28 = 15,581.35 : x
  2. Step 2: Convert to fraction form
    18,425.39/25,401.28 = 15,581.35/x
  3. Step 3: Cross multiply
    18,425.39x = 25,401.28 × 15,581.35
  4. Step 4: Simplify right side
    18,425.39x = 395,786,113.26
  5. Step 5: Solve for x
    x = 395,786,113.26/18,425.39
  6. Step 6: Final answer
    x = 21,480.47

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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.