Home / 20,242.90-27,935.25-11,290.17

Finding the Fourth Proportional to 20,242.90, 27,935.25 and 11,290.17

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Solution

The fourth proportional to 20,242.90, 27,935.25 and 11,290.17 is: 15,580.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.90 : 27,935.25 = 11,290.17 : x
  2. Step 2: Convert to fraction form
    20,242.90/27,935.25 = 11,290.17/x
  3. Step 3: Cross multiply
    20,242.90x = 27,935.25 × 11,290.17
  4. Step 4: Simplify right side
    20,242.90x = 315,393,783.91
  5. Step 5: Solve for x
    x = 315,393,783.91/20,242.90
  6. Step 6: Final answer
    x = 15,580.46

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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.