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Finding the Fourth Proportional to 10,538, 15,809.68 and 3,612.48

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Solution

The fourth proportional to 10,538, 15,809.68 and 3,612.48 is: 5,419.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,538 : 15,809.68 = 3,612.48 : x
  2. Step 2: Convert to fraction form
    10,538/15,809.68 = 3,612.48/x
  3. Step 3: Cross multiply
    10,538x = 15,809.68 × 3,612.48
  4. Step 4: Simplify right side
    10,538x = 57,112,152.81
  5. Step 5: Solve for x
    x = 57,112,152.81/10,538
  6. Step 6: Final answer
    x = 5,419.64

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Why These Related Problems?

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