Home / 18,063.12-24,929.28-10,990.56

Finding the Fourth Proportional to 18,063.12, 24,929.28 and 10,990.56

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Solution

The fourth proportional to 18,063.12, 24,929.28 and 10,990.56 is: 15,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,063.12 : 24,929.28 = 10,990.56 : x
  2. Step 2: Convert to fraction form
    18,063.12/24,929.28 = 10,990.56/x
  3. Step 3: Cross multiply
    18,063.12x = 24,929.28 × 10,990.56
  4. Step 4: Simplify right side
    18,063.12x = 273,986,747.60
  5. Step 5: Solve for x
    x = 273,986,747.60/18,063.12
  6. Step 6: Final answer
    x = 15,168.30

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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.