Home / 20,266.79-27,968.85-11,314.40

Finding the Fourth Proportional to 20,266.79, 27,968.85 and 11,314.40

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Solution

The fourth proportional to 20,266.79, 27,968.85 and 11,314.40 is: 15,614.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.79 : 27,968.85 = 11,314.40 : x
  2. Step 2: Convert to fraction form
    20,266.79/27,968.85 = 11,314.40/x
  3. Step 3: Cross multiply
    20,266.79x = 27,968.85 × 11,314.40
  4. Step 4: Simplify right side
    20,266.79x = 316,450,616.60
  5. Step 5: Solve for x
    x = 316,450,616.60/20,266.79
  6. Step 6: Final answer
    x = 15,614.25

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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.