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Finding the Fourth Proportional to 17,610.12, 26,415.96 and 7,221

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Solution

The fourth proportional to 17,610.12, 26,415.96 and 7,221 is: 10,831.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,610.12 : 26,415.96 = 7,221 : x
  2. Step 2: Convert to fraction form
    17,610.12/26,415.96 = 7,221/x
  3. Step 3: Cross multiply
    17,610.12x = 26,415.96 × 7,221
  4. Step 4: Simplify right side
    17,610.12x = 190,749,647.16
  5. Step 5: Solve for x
    x = 190,749,647.16/17,610.12
  6. Step 6: Final answer
    x = 10,831.82

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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.