Home / 20,213.28-27,894.78-11,261.70

Finding the Fourth Proportional to 20,213.28, 27,894.78 and 11,261.70

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Solution

The fourth proportional to 20,213.28, 27,894.78 and 11,261.70 is: 15,541.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.28 : 27,894.78 = 11,261.70 : x
  2. Step 2: Convert to fraction form
    20,213.28/27,894.78 = 11,261.70/x
  3. Step 3: Cross multiply
    20,213.28x = 27,894.78 × 11,261.70
  4. Step 4: Simplify right side
    20,213.28x = 314,142,643.93
  5. Step 5: Solve for x
    x = 314,142,643.93/20,213.28
  6. Step 6: Final answer
    x = 15,541.40

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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.