Home / 10,612.68-15,920.67-3,215.37

Finding the Fourth Proportional to 10,612.68, 15,920.67 and 3,215.37

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Solution

The fourth proportional to 10,612.68, 15,920.67 and 3,215.37 is: 4,823.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,612.68 : 15,920.67 = 3,215.37 : x
  2. Step 2: Convert to fraction form
    10,612.68/15,920.67 = 3,215.37/x
  3. Step 3: Cross multiply
    10,612.68x = 15,920.67 × 3,215.37
  4. Step 4: Simplify right side
    10,612.68x = 51,190,844.70
  5. Step 5: Solve for x
    x = 51,190,844.70/10,612.68
  6. Step 6: Final answer
    x = 4,823.55

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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.