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Finding the Fourth Proportional to 15,696.60, 23,560.70 and 9,135.60

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Solution

The fourth proportional to 15,696.60, 23,560.70 and 9,135.60 is: 13,712.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.60 : 23,560.70 = 9,135.60 : x
  2. Step 2: Convert to fraction form
    15,696.60/23,560.70 = 9,135.60/x
  3. Step 3: Cross multiply
    15,696.60x = 23,560.70 × 9,135.60
  4. Step 4: Simplify right side
    15,696.60x = 215,241,130.92
  5. Step 5: Solve for x
    x = 215,241,130.92/15,696.60
  6. Step 6: Final answer
    x = 13,712.60

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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.