Home / 18,920.89-26,109.68-10,961.74

Finding the Fourth Proportional to 18,920.89, 26,109.68 and 10,961.74

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Solution

The fourth proportional to 18,920.89, 26,109.68 and 10,961.74 is: 15,126.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.89 : 26,109.68 = 10,961.74 : x
  2. Step 2: Convert to fraction form
    18,920.89/26,109.68 = 10,961.74/x
  3. Step 3: Cross multiply
    18,920.89x = 26,109.68 × 10,961.74
  4. Step 4: Simplify right side
    18,920.89x = 286,207,523.64
  5. Step 5: Solve for x
    x = 286,207,523.64/18,920.89
  6. Step 6: Final answer
    x = 15,126.54

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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.