Home / 21,939.02-30,275.87-11,867.43

Finding the Fourth Proportional to 21,939.02, 30,275.87 and 11,867.43

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Solution

The fourth proportional to 21,939.02, 30,275.87 and 11,867.43 is: 16,377.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.02 : 30,275.87 = 11,867.43 : x
  2. Step 2: Convert to fraction form
    21,939.02/30,275.87 = 11,867.43/x
  3. Step 3: Cross multiply
    21,939.02x = 30,275.87 × 11,867.43
  4. Step 4: Simplify right side
    21,939.02x = 359,296,767.91
  5. Step 5: Solve for x
    x = 359,296,767.91/21,939.02
  6. Step 6: Final answer
    x = 16,377.07

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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.