Home / 25,996.05-35,874.90-15,920.79

Finding the Fourth Proportional to 25,996.05, 35,874.90 and 15,920.79

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Solution

The fourth proportional to 25,996.05, 35,874.90 and 15,920.79 is: 21,970.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,996.05 : 35,874.90 = 15,920.79 : x
  2. Step 2: Convert to fraction form
    25,996.05/35,874.90 = 15,920.79/x
  3. Step 3: Cross multiply
    25,996.05x = 35,874.90 × 15,920.79
  4. Step 4: Simplify right side
    25,996.05x = 571,156,749.17
  5. Step 5: Solve for x
    x = 571,156,749.17/25,996.05
  6. Step 6: Final answer
    x = 21,970.91

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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.