Home / 18,299.76-25,240.68-15,493.08

Finding the Fourth Proportional to 18,299.76, 25,240.68 and 15,493.08

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Solution

The fourth proportional to 18,299.76, 25,240.68 and 15,493.08 is: 21,369.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.76 : 25,240.68 = 15,493.08 : x
  2. Step 2: Convert to fraction form
    18,299.76/25,240.68 = 15,493.08/x
  3. Step 3: Cross multiply
    18,299.76x = 25,240.68 × 15,493.08
  4. Step 4: Simplify right side
    18,299.76x = 391,055,874.49
  5. Step 5: Solve for x
    x = 391,055,874.49/18,299.76
  6. Step 6: Final answer
    x = 21,369.45

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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.