Home / 21,085.92-31,628.27-5,503.55

Finding the Fourth Proportional to 21,085.92, 31,628.27 and 5,503.55

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Solution

The fourth proportional to 21,085.92, 31,628.27 and 5,503.55 is: 8,255.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.92 : 31,628.27 = 5,503.55 : x
  2. Step 2: Convert to fraction form
    21,085.92/31,628.27 = 5,503.55/x
  3. Step 3: Cross multiply
    21,085.92x = 31,628.27 × 5,503.55
  4. Step 4: Simplify right side
    21,085.92x = 174,067,620.98
  5. Step 5: Solve for x
    x = 174,067,620.98/21,085.92
  6. Step 6: Final answer
    x = 8,255.16

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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.