Home / 22,811.39-31,479.41-13,256.68

Finding the Fourth Proportional to 22,811.39, 31,479.41 and 13,256.68

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Solution

The fourth proportional to 22,811.39, 31,479.41 and 13,256.68 is: 18,294.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,811.39 : 31,479.41 = 13,256.68 : x
  2. Step 2: Convert to fraction form
    22,811.39/31,479.41 = 13,256.68/x
  3. Step 3: Cross multiply
    22,811.39x = 31,479.41 × 13,256.68
  4. Step 4: Simplify right side
    22,811.39x = 417,312,319.98
  5. Step 5: Solve for x
    x = 417,312,319.98/22,811.39
  6. Step 6: Final answer
    x = 18,294.04

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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.