Home / 21,253.78-29,329.80-11,822.14

Finding the Fourth Proportional to 21,253.78, 29,329.80 and 11,822.14

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Solution

The fourth proportional to 21,253.78, 29,329.80 and 11,822.14 is: 16,314.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.78 : 29,329.80 = 11,822.14 : x
  2. Step 2: Convert to fraction form
    21,253.78/29,329.80 = 11,822.14/x
  3. Step 3: Cross multiply
    21,253.78x = 29,329.80 × 11,822.14
  4. Step 4: Simplify right side
    21,253.78x = 346,741,001.77
  5. Step 5: Solve for x
    x = 346,741,001.77/21,253.78
  6. Step 6: Final answer
    x = 16,314.32

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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.