Home / 18,399.84-25,388.28-11,686.56

Finding the Fourth Proportional to 18,399.84, 25,388.28 and 11,686.56

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Solution

The fourth proportional to 18,399.84, 25,388.28 and 11,686.56 is: 16,125.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,399.84 : 25,388.28 = 11,686.56 : x
  2. Step 2: Convert to fraction form
    18,399.84/25,388.28 = 11,686.56/x
  3. Step 3: Cross multiply
    18,399.84x = 25,388.28 × 11,686.56
  4. Step 4: Simplify right side
    18,399.84x = 296,701,657.52
  5. Step 5: Solve for x
    x = 296,701,657.52/18,399.84
  6. Step 6: Final answer
    x = 16,125.23

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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.