Home / 21,426.47-29,568.53-11,995.23

Finding the Fourth Proportional to 21,426.47, 29,568.53 and 11,995.23

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Solution

The fourth proportional to 21,426.47, 29,568.53 and 11,995.23 is: 16,553.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.47 : 29,568.53 = 11,995.23 : x
  2. Step 2: Convert to fraction form
    21,426.47/29,568.53 = 11,995.23/x
  3. Step 3: Cross multiply
    21,426.47x = 29,568.53 × 11,995.23
  4. Step 4: Simplify right side
    21,426.47x = 354,681,458.98
  5. Step 5: Solve for x
    x = 354,681,458.98/21,426.47
  6. Step 6: Final answer
    x = 16,553.43

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Double scale
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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.