Home / 22,711.51-31,343.39-12,639.84

Finding the Fourth Proportional to 22,711.51, 31,343.39 and 12,639.84

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Solution

The fourth proportional to 22,711.51, 31,343.39 and 12,639.84 is: 17,443.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,711.51 : 31,343.39 = 12,639.84 : x
  2. Step 2: Convert to fraction form
    22,711.51/31,343.39 = 12,639.84/x
  3. Step 3: Cross multiply
    22,711.51x = 31,343.39 × 12,639.84
  4. Step 4: Simplify right side
    22,711.51x = 396,175,434.66
  5. Step 5: Solve for x
    x = 396,175,434.66/22,711.51
  6. Step 6: Final answer
    x = 17,443.82

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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.