Home / 18,920.33-26,112.56-12,225.43

Finding the Fourth Proportional to 18,920.33, 26,112.56 and 12,225.43

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Solution

The fourth proportional to 18,920.33, 26,112.56 and 12,225.43 is: 16,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.33 : 26,112.56 = 12,225.43 : x
  2. Step 2: Convert to fraction form
    18,920.33/26,112.56 = 12,225.43/x
  3. Step 3: Cross multiply
    18,920.33x = 26,112.56 × 12,225.43
  4. Step 4: Simplify right side
    18,920.33x = 319,237,143.84
  5. Step 5: Solve for x
    x = 319,237,143.84/18,920.33
  6. Step 6: Final answer
    x = 16,872.70

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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.