Home / 10,148.68-15,219.78-3,221.56

Finding the Fourth Proportional to 10,148.68, 15,219.78 and 3,221.56

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Solution

The fourth proportional to 10,148.68, 15,219.78 and 3,221.56 is: 4,831.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,148.68 : 15,219.78 = 3,221.56 : x
  2. Step 2: Convert to fraction form
    10,148.68/15,219.78 = 3,221.56/x
  3. Step 3: Cross multiply
    10,148.68x = 15,219.78 × 3,221.56
  4. Step 4: Simplify right side
    10,148.68x = 49,031,434.46
  5. Step 5: Solve for x
    x = 49,031,434.46/10,148.68
  6. Step 6: Final answer
    x = 4,831.31

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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.