Home / 21,274.11-29,357.11-11,712.13

Finding the Fourth Proportional to 21,274.11, 29,357.11 and 11,712.13

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Solution

The fourth proportional to 21,274.11, 29,357.11 and 11,712.13 is: 16,162.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.11 : 29,357.11 = 11,712.13 : x
  2. Step 2: Convert to fraction form
    21,274.11/29,357.11 = 11,712.13/x
  3. Step 3: Cross multiply
    21,274.11x = 29,357.11 × 11,712.13
  4. Step 4: Simplify right side
    21,274.11x = 343,834,288.74
  5. Step 5: Solve for x
    x = 343,834,288.74/21,274.11
  6. Step 6: Final answer
    x = 16,162.10

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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.