Home / 21,824.78-30,117.31-13,341.11

Finding the Fourth Proportional to 21,824.78, 30,117.31 and 13,341.11

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Solution

The fourth proportional to 21,824.78, 30,117.31 and 13,341.11 is: 18,410.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,824.78 : 30,117.31 = 13,341.11 : x
  2. Step 2: Convert to fraction form
    21,824.78/30,117.31 = 13,341.11/x
  3. Step 3: Cross multiply
    21,824.78x = 30,117.31 × 13,341.11
  4. Step 4: Simplify right side
    21,824.78x = 401,798,161.67
  5. Step 5: Solve for x
    x = 401,798,161.67/21,824.78
  6. Step 6: Final answer
    x = 18,410.19

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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.