Home / 21,825.11-30,117.86-13,341.44

Finding the Fourth Proportional to 21,825.11, 30,117.86 and 13,341.44

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Solution

The fourth proportional to 21,825.11, 30,117.86 and 13,341.44 is: 18,410.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,825.11 : 30,117.86 = 13,341.44 : x
  2. Step 2: Convert to fraction form
    21,825.11/30,117.86 = 13,341.44/x
  3. Step 3: Cross multiply
    21,825.11x = 30,117.86 × 13,341.44
  4. Step 4: Simplify right side
    21,825.11x = 401,815,680.74
  5. Step 5: Solve for x
    x = 401,815,680.74/21,825.11
  6. Step 6: Final answer
    x = 18,410.70

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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.