Home / 19,431.66-26,820.17-11,369.06

Finding the Fourth Proportional to 19,431.66, 26,820.17 and 11,369.06

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Solution

The fourth proportional to 19,431.66, 26,820.17 and 11,369.06 is: 15,691.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.66 : 26,820.17 = 11,369.06 : x
  2. Step 2: Convert to fraction form
    19,431.66/26,820.17 = 11,369.06/x
  3. Step 3: Cross multiply
    19,431.66x = 26,820.17 × 11,369.06
  4. Step 4: Simplify right side
    19,431.66x = 304,919,930.99
  5. Step 5: Solve for x
    x = 304,919,930.99/19,431.66
  6. Step 6: Final answer
    x = 15,691.91

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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.