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Finding the Fourth Proportional to 17,808.64, 26,712.96 and 7,945.56

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Solution

The fourth proportional to 17,808.64, 26,712.96 and 7,945.56 is: 11,918.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,808.64 : 26,712.96 = 7,945.56 : x
  2. Step 2: Convert to fraction form
    17,808.64/26,712.96 = 7,945.56/x
  3. Step 3: Cross multiply
    17,808.64x = 26,712.96 × 7,945.56
  4. Step 4: Simplify right side
    17,808.64x = 212,249,426.46
  5. Step 5: Solve for x
    x = 212,249,426.46/17,808.64
  6. Step 6: Final answer
    x = 11,918.34

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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.