Home / 31,168.68-43,007.09-18,423.95

Finding the Fourth Proportional to 31,168.68, 43,007.09 and 18,423.95

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Solution

The fourth proportional to 31,168.68, 43,007.09 and 18,423.95 is: 25,421.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,168.68 : 43,007.09 = 18,423.95 : x
  2. Step 2: Convert to fraction form
    31,168.68/43,007.09 = 18,423.95/x
  3. Step 3: Cross multiply
    31,168.68x = 43,007.09 × 18,423.95
  4. Step 4: Simplify right side
    31,168.68x = 792,360,168.65
  5. Step 5: Solve for x
    x = 792,360,168.65/31,168.68
  6. Step 6: Final answer
    x = 25,421.68

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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.