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Finding the Fourth Proportional to 18,854.60, 26,029.73 and 12,895.02

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Solution

The fourth proportional to 18,854.60, 26,029.73 and 12,895.02 is: 17,802.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.60 : 26,029.73 = 12,895.02 : x
  2. Step 2: Convert to fraction form
    18,854.60/26,029.73 = 12,895.02/x
  3. Step 3: Cross multiply
    18,854.60x = 26,029.73 × 12,895.02
  4. Step 4: Simplify right side
    18,854.60x = 335,653,921.18
  5. Step 5: Solve for x
    x = 335,653,921.18/18,854.60
  6. Step 6: Final answer
    x = 17,802.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.