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Finding the Fourth Proportional to 15,460.61, 21,355.67 and 11,435.63

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Solution

The fourth proportional to 15,460.61, 21,355.67 and 11,435.63 is: 15,795.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,460.61 : 21,355.67 = 11,435.63 : x
  2. Step 2: Convert to fraction form
    15,460.61/21,355.67 = 11,435.63/x
  3. Step 3: Cross multiply
    15,460.61x = 21,355.67 × 11,435.63
  4. Step 4: Simplify right side
    15,460.61x = 244,215,376.57
  5. Step 5: Solve for x
    x = 244,215,376.57/15,460.61
  6. Step 6: Final answer
    x = 15,795.97

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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.