Home / 22,111.66-30,513.38-13,157.11

Finding the Fourth Proportional to 22,111.66, 30,513.38 and 13,157.11

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Solution

The fourth proportional to 22,111.66, 30,513.38 and 13,157.11 is: 18,156.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,111.66 : 30,513.38 = 13,157.11 : x
  2. Step 2: Convert to fraction form
    22,111.66/30,513.38 = 13,157.11/x
  3. Step 3: Cross multiply
    22,111.66x = 30,513.38 × 13,157.11
  4. Step 4: Simplify right side
    22,111.66x = 401,467,897.13
  5. Step 5: Solve for x
    x = 401,467,897.13/22,111.66
  6. Step 6: Final answer
    x = 18,156.39

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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.