Home / 21,161.31-31,742.97-17,456.67

Finding the Fourth Proportional to 21,161.31, 31,742.97 and 17,456.67

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Solution

The fourth proportional to 21,161.31, 31,742.97 and 17,456.67 is: 26,185.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.31 : 31,742.97 = 17,456.67 : x
  2. Step 2: Convert to fraction form
    21,161.31/31,742.97 = 17,456.67/x
  3. Step 3: Cross multiply
    21,161.31x = 31,742.97 × 17,456.67
  4. Step 4: Simplify right side
    21,161.31x = 554,126,552.11
  5. Step 5: Solve for x
    x = 554,126,552.11/21,161.31
  6. Step 6: Final answer
    x = 26,185.84

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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.