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Finding the Fourth Proportional to 18,875.84, 26,046.70 and 10,920.56

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Solution

The fourth proportional to 18,875.84, 26,046.70 and 10,920.56 is: 15,069.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,875.84 : 26,046.70 = 10,920.56 : x
  2. Step 2: Convert to fraction form
    18,875.84/26,046.70 = 10,920.56/x
  3. Step 3: Cross multiply
    18,875.84x = 26,046.70 × 10,920.56
  4. Step 4: Simplify right side
    18,875.84x = 284,444,392.62
  5. Step 5: Solve for x
    x = 284,444,392.62/18,875.84
  6. Step 6: Final answer
    x = 15,069.23

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