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Finding the Fourth Proportional to 17,905, 26,854.62 and 12,695.08

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Solution

The fourth proportional to 17,905, 26,854.62 and 12,695.08 is: 19,040.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,905 : 26,854.62 = 12,695.08 : x
  2. Step 2: Convert to fraction form
    17,905/26,854.62 = 12,695.08/x
  3. Step 3: Cross multiply
    17,905x = 26,854.62 × 12,695.08
  4. Step 4: Simplify right side
    17,905x = 340,921,549.27
  5. Step 5: Solve for x
    x = 340,921,549.27/17,905
  6. Step 6: Final answer
    x = 19,040.58

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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.