Home / 20,208.49-27,887.72-11,715.53

Finding the Fourth Proportional to 20,208.49, 27,887.72 and 11,715.53

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Solution

The fourth proportional to 20,208.49, 27,887.72 and 11,715.53 is: 16,167.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.49 : 27,887.72 = 11,715.53 : x
  2. Step 2: Convert to fraction form
    20,208.49/27,887.72 = 11,715.53/x
  3. Step 3: Cross multiply
    20,208.49x = 27,887.72 × 11,715.53
  4. Step 4: Simplify right side
    20,208.49x = 326,719,499.26
  5. Step 5: Solve for x
    x = 326,719,499.26/20,208.49
  6. Step 6: Final answer
    x = 16,167.44

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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.