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Finding the Fourth Proportional to 25,491.79, 35,181.05 and 15,422.70

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Solution

The fourth proportional to 25,491.79, 35,181.05 and 15,422.70 is: 21,284.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,491.79 : 35,181.05 = 15,422.70 : x
  2. Step 2: Convert to fraction form
    25,491.79/35,181.05 = 15,422.70/x
  3. Step 3: Cross multiply
    25,491.79x = 35,181.05 × 15,422.70
  4. Step 4: Simplify right side
    25,491.79x = 542,586,856.34
  5. Step 5: Solve for x
    x = 542,586,856.34/25,491.79
  6. Step 6: Final answer
    x = 21,284.77

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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.