Home / 21,112.95-29,135.64-11,553.03

Finding the Fourth Proportional to 21,112.95, 29,135.64 and 11,553.03

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Solution

The fourth proportional to 21,112.95, 29,135.64 and 11,553.03 is: 15,943.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.95 : 29,135.64 = 11,553.03 : x
  2. Step 2: Convert to fraction form
    21,112.95/29,135.64 = 11,553.03/x
  3. Step 3: Cross multiply
    21,112.95x = 29,135.64 × 11,553.03
  4. Step 4: Simplify right side
    21,112.95x = 336,604,922.99
  5. Step 5: Solve for x
    x = 336,604,922.99/21,112.95
  6. Step 6: Final answer
    x = 15,943.05

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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.