Home / 21,902.26-30,214.28-12,945.46

Finding the Fourth Proportional to 21,902.26, 30,214.28 and 12,945.46

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Solution

The fourth proportional to 21,902.26, 30,214.28 and 12,945.46 is: 17,858.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,902.26 : 30,214.28 = 12,945.46 : x
  2. Step 2: Convert to fraction form
    21,902.26/30,214.28 = 12,945.46/x
  3. Step 3: Cross multiply
    21,902.26x = 30,214.28 × 12,945.46
  4. Step 4: Simplify right side
    21,902.26x = 391,137,753.17
  5. Step 5: Solve for x
    x = 391,137,753.17/21,902.26
  6. Step 6: Final answer
    x = 17,858.33

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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.