Home / 21,939.03-30,275.87-11,867.49

Finding the Fourth Proportional to 21,939.03, 30,275.87 and 11,867.49

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Solution

The fourth proportional to 21,939.03, 30,275.87 and 11,867.49 is: 16,377.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.03 : 30,275.87 = 11,867.49 : x
  2. Step 2: Convert to fraction form
    21,939.03/30,275.87 = 11,867.49/x
  3. Step 3: Cross multiply
    21,939.03x = 30,275.87 × 11,867.49
  4. Step 4: Simplify right side
    21,939.03x = 359,298,525.13
  5. Step 5: Solve for x
    x = 359,298,525.13/21,939.03
  6. Step 6: Final answer
    x = 16,377.14

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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.