Home / 21,177.91-29,229.02-11,749.51

Finding the Fourth Proportional to 21,177.91, 29,229.02 and 11,749.51

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Solution

The fourth proportional to 21,177.91, 29,229.02 and 11,749.51 is: 16,216.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.91 : 29,229.02 = 11,749.51 : x
  2. Step 2: Convert to fraction form
    21,177.91/29,229.02 = 11,749.51/x
  3. Step 3: Cross multiply
    21,177.91x = 29,229.02 × 11,749.51
  4. Step 4: Simplify right side
    21,177.91x = 343,426,662.78
  5. Step 5: Solve for x
    x = 343,426,662.78/21,177.91
  6. Step 6: Final answer
    x = 16,216.27

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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.