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Finding the Fourth Proportional to 22,320.73, 30,807.17 and 12,888.01

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Solution

The fourth proportional to 22,320.73, 30,807.17 and 12,888.01 is: 17,788.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,320.73 : 30,807.17 = 12,888.01 : x
  2. Step 2: Convert to fraction form
    22,320.73/30,807.17 = 12,888.01/x
  3. Step 3: Cross multiply
    22,320.73x = 30,807.17 × 12,888.01
  4. Step 4: Simplify right side
    22,320.73x = 397,043,050.59
  5. Step 5: Solve for x
    x = 397,043,050.59/22,320.73
  6. Step 6: Final answer
    x = 17,788.09

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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.