Home / 21,982.98-30,336.66-13,035

Finding the Fourth Proportional to 21,982.98, 30,336.66 and 13,035

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Solution

The fourth proportional to 21,982.98, 30,336.66 and 13,035 is: 17,988.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,982.98 : 30,336.66 = 13,035 : x
  2. Step 2: Convert to fraction form
    21,982.98/30,336.66 = 13,035/x
  3. Step 3: Cross multiply
    21,982.98x = 30,336.66 × 13,035
  4. Step 4: Simplify right side
    21,982.98x = 395,438,363.10
  5. Step 5: Solve for x
    x = 395,438,363.10/21,982.98
  6. Step 6: Final answer
    x = 17,988.39

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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.