Home / 19,691.36-27,173.60-11,307.68

Finding the Fourth Proportional to 19,691.36, 27,173.60 and 11,307.68

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Solution

The fourth proportional to 19,691.36, 27,173.60 and 11,307.68 is: 15,604.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,691.36 : 27,173.60 = 11,307.68 : x
  2. Step 2: Convert to fraction form
    19,691.36/27,173.60 = 11,307.68/x
  3. Step 3: Cross multiply
    19,691.36x = 27,173.60 × 11,307.68
  4. Step 4: Simplify right side
    19,691.36x = 307,270,373.25
  5. Step 5: Solve for x
    x = 307,270,373.25/19,691.36
  6. Step 6: Final answer
    x = 15,604.32

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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.