Home / 21,323.66-29,428.11-12,371.16

Finding the Fourth Proportional to 21,323.66, 29,428.11 and 12,371.16

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Solution

The fourth proportional to 21,323.66, 29,428.11 and 12,371.16 is: 17,073.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,323.66 : 29,428.11 = 12,371.16 : x
  2. Step 2: Convert to fraction form
    21,323.66/29,428.11 = 12,371.16/x
  3. Step 3: Cross multiply
    21,323.66x = 29,428.11 × 12,371.16
  4. Step 4: Simplify right side
    21,323.66x = 364,059,857.31
  5. Step 5: Solve for x
    x = 364,059,857.31/21,323.66
  6. Step 6: Final answer
    x = 17,073.05

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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.