Home / 21,117.82-31,677.54-9,431.14

Finding the Fourth Proportional to 21,117.82, 31,677.54 and 9,431.14

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Solution

The fourth proportional to 21,117.82, 31,677.54 and 9,431.14 is: 14,147.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.82 : 31,677.54 = 9,431.14 : x
  2. Step 2: Convert to fraction form
    21,117.82/31,677.54 = 9,431.14/x
  3. Step 3: Cross multiply
    21,117.82x = 31,677.54 × 9,431.14
  4. Step 4: Simplify right side
    21,117.82x = 298,755,314.60
  5. Step 5: Solve for x
    x = 298,755,314.60/21,117.82
  6. Step 6: Final answer
    x = 14,147.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.