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Finding the Fourth Proportional to 10,356.96, 15,536.40 and 3,432

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Solution

The fourth proportional to 10,356.96, 15,536.40 and 3,432 is: 5,148.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,356.96 : 15,536.40 = 3,432 : x
  2. Step 2: Convert to fraction form
    10,356.96/15,536.40 = 3,432/x
  3. Step 3: Cross multiply
    10,356.96x = 15,536.40 × 3,432
  4. Step 4: Simplify right side
    10,356.96x = 53,320,924.80
  5. Step 5: Solve for x
    x = 53,320,924.80/10,356.96
  6. Step 6: Final answer
    x = 5,148.32

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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.