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Finding the Fourth Proportional to 23,226.40, 34,828.95 and 7,428.36

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Solution

The fourth proportional to 23,226.40, 34,828.95 and 7,428.36 is: 11,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,226.40 : 34,828.95 = 7,428.36 : x
  2. Step 2: Convert to fraction form
    23,226.40/34,828.95 = 7,428.36/x
  3. Step 3: Cross multiply
    23,226.40x = 34,828.95 × 7,428.36
  4. Step 4: Simplify right side
    23,226.40x = 258,721,979.02
  5. Step 5: Solve for x
    x = 258,721,979.02/23,226.40
  6. Step 6: Final answer
    x = 11,139.13

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.