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Finding the Fourth Proportional to 17,720.22, 26,562.09 and 7,864.14

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Solution

The fourth proportional to 17,720.22, 26,562.09 and 7,864.14 is: 11,788.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,720.22 : 26,562.09 = 7,864.14 : x
  2. Step 2: Convert to fraction form
    17,720.22/26,562.09 = 7,864.14/x
  3. Step 3: Cross multiply
    17,720.22x = 26,562.09 × 7,864.14
  4. Step 4: Simplify right side
    17,720.22x = 208,887,994.45
  5. Step 5: Solve for x
    x = 208,887,994.45/17,720.22
  6. Step 6: Final answer
    x = 11,788.12

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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.