Home / 21,845.12-30,149.51-13,352.14

Finding the Fourth Proportional to 21,845.12, 30,149.51 and 13,352.14

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Solution

The fourth proportional to 21,845.12, 30,149.51 and 13,352.14 is: 18,427.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,845.12 : 30,149.51 = 13,352.14 : x
  2. Step 2: Convert to fraction form
    21,845.12/30,149.51 = 13,352.14/x
  3. Step 3: Cross multiply
    21,845.12x = 30,149.51 × 13,352.14
  4. Step 4: Simplify right side
    21,845.12x = 402,560,336.32
  5. Step 5: Solve for x
    x = 402,560,336.32/21,845.12
  6. Step 6: Final answer
    x = 18,427.93

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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.