Home / 20,233.10-27,921.57-11,280.71

Finding the Fourth Proportional to 20,233.10, 27,921.57 and 11,280.71

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Solution

The fourth proportional to 20,233.10, 27,921.57 and 11,280.71 is: 15,567.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,233.10 : 27,921.57 = 11,280.71 : x
  2. Step 2: Convert to fraction form
    20,233.10/27,921.57 = 11,280.71/x
  3. Step 3: Cross multiply
    20,233.10x = 27,921.57 × 11,280.71
  4. Step 4: Simplify right side
    20,233.10x = 314,975,161.42
  5. Step 5: Solve for x
    x = 314,975,161.42/20,233.10
  6. Step 6: Final answer
    x = 15,567.32

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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.