Home / 21,178.07-29,224.99-11,747.51

Finding the Fourth Proportional to 21,178.07, 29,224.99 and 11,747.51

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Solution

The fourth proportional to 21,178.07, 29,224.99 and 11,747.51 is: 16,211.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.07 : 29,224.99 = 11,747.51 : x
  2. Step 2: Convert to fraction form
    21,178.07/29,224.99 = 11,747.51/x
  3. Step 3: Cross multiply
    21,178.07x = 29,224.99 × 11,747.51
  4. Step 4: Simplify right side
    21,178.07x = 343,320,862.27
  5. Step 5: Solve for x
    x = 343,320,862.27/21,178.07
  6. Step 6: Final answer
    x = 16,211.15

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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.