Home / 20,242.79-27,935.09-11,290.87

Finding the Fourth Proportional to 20,242.79, 27,935.09 and 11,290.87

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Solution

The fourth proportional to 20,242.79, 27,935.09 and 11,290.87 is: 15,581.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.79 : 27,935.09 = 11,290.87 : x
  2. Step 2: Convert to fraction form
    20,242.79/27,935.09 = 11,290.87/x
  3. Step 3: Cross multiply
    20,242.79x = 27,935.09 × 11,290.87
  4. Step 4: Simplify right side
    20,242.79x = 315,411,428.02
  5. Step 5: Solve for x
    x = 315,411,428.02/20,242.79
  6. Step 6: Final answer
    x = 15,581.42

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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.