Home / 18,189.68-25,108.40-11,479.69

Finding the Fourth Proportional to 18,189.68, 25,108.40 and 11,479.69

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Solution

The fourth proportional to 18,189.68, 25,108.40 and 11,479.69 is: 15,846.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.68 : 25,108.40 = 11,479.69 : x
  2. Step 2: Convert to fraction form
    18,189.68/25,108.40 = 11,479.69/x
  3. Step 3: Cross multiply
    18,189.68x = 25,108.40 × 11,479.69
  4. Step 4: Simplify right side
    18,189.68x = 288,236,465.46
  5. Step 5: Solve for x
    x = 288,236,465.46/18,189.68
  6. Step 6: Final answer
    x = 15,846.15

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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.