Home / 18,118.91-24,995.58-12,816.65

Finding the Fourth Proportional to 18,118.91, 24,995.58 and 12,816.65

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Solution

The fourth proportional to 18,118.91, 24,995.58 and 12,816.65 is: 17,680.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.91 : 24,995.58 = 12,816.65 : x
  2. Step 2: Convert to fraction form
    18,118.91/24,995.58 = 12,816.65/x
  3. Step 3: Cross multiply
    18,118.91x = 24,995.58 × 12,816.65
  4. Step 4: Simplify right side
    18,118.91x = 320,359,600.41
  5. Step 5: Solve for x
    x = 320,359,600.41/18,118.91
  6. Step 6: Final answer
    x = 17,680.95

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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.