Home / 22,750.38-31,391.36-12,678.58

Finding the Fourth Proportional to 22,750.38, 31,391.36 and 12,678.58

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Solution

The fourth proportional to 22,750.38, 31,391.36 and 12,678.58 is: 17,494.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,750.38 : 31,391.36 = 12,678.58 : x
  2. Step 2: Convert to fraction form
    22,750.38/31,391.36 = 12,678.58/x
  3. Step 3: Cross multiply
    22,750.38x = 31,391.36 × 12,678.58
  4. Step 4: Simplify right side
    22,750.38x = 397,997,869.07
  5. Step 5: Solve for x
    x = 397,997,869.07/22,750.38
  6. Step 6: Final answer
    x = 17,494.12

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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.