Home / 15,229.53-21,019.34-8,859.81

Finding the Fourth Proportional to 15,229.53, 21,019.34 and 8,859.81

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Solution

The fourth proportional to 15,229.53, 21,019.34 and 8,859.81 is: 12,228.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,229.53 : 21,019.34 = 8,859.81 : x
  2. Step 2: Convert to fraction form
    15,229.53/21,019.34 = 8,859.81/x
  3. Step 3: Cross multiply
    15,229.53x = 21,019.34 × 8,859.81
  4. Step 4: Simplify right side
    15,229.53x = 186,227,358.73
  5. Step 5: Solve for x
    x = 186,227,358.73/15,229.53
  6. Step 6: Final answer
    x = 12,228.04

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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.