Home / 20,449.68-28,220.74-11,497.02

Finding the Fourth Proportional to 20,449.68, 28,220.74 and 11,497.02

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Solution

The fourth proportional to 20,449.68, 28,220.74 and 11,497.02 is: 15,865.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.68 : 28,220.74 = 11,497.02 : x
  2. Step 2: Convert to fraction form
    20,449.68/28,220.74 = 11,497.02/x
  3. Step 3: Cross multiply
    20,449.68x = 28,220.74 × 11,497.02
  4. Step 4: Simplify right side
    20,449.68x = 324,454,412.19
  5. Step 5: Solve for x
    x = 324,454,412.19/20,449.68
  6. Step 6: Final answer
    x = 15,865.99

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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.