Home / 20,451.84-28,224.56-11,502.16

Finding the Fourth Proportional to 20,451.84, 28,224.56 and 11,502.16

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Solution

The fourth proportional to 20,451.84, 28,224.56 and 11,502.16 is: 15,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.84 : 28,224.56 = 11,502.16 : x
  2. Step 2: Convert to fraction form
    20,451.84/28,224.56 = 11,502.16/x
  3. Step 3: Cross multiply
    20,451.84x = 28,224.56 × 11,502.16
  4. Step 4: Simplify right side
    20,451.84x = 324,643,405.05
  5. Step 5: Solve for x
    x = 324,643,405.05/20,451.84
  6. Step 6: Final answer
    x = 15,873.55

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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.