Home / 21,100.92-31,640.36-10,559.56

Finding the Fourth Proportional to 21,100.92, 31,640.36 and 10,559.56

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Solution

The fourth proportional to 21,100.92, 31,640.36 and 10,559.56 is: 15,833.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,100.92 : 31,640.36 = 10,559.56 : x
  2. Step 2: Convert to fraction form
    21,100.92/31,640.36 = 10,559.56/x
  3. Step 3: Cross multiply
    21,100.92x = 31,640.36 × 10,559.56
  4. Step 4: Simplify right side
    21,100.92x = 334,108,279.84
  5. Step 5: Solve for x
    x = 334,108,279.84/21,100.92
  6. Step 6: Final answer
    x = 15,833.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.