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Finding the Fourth Proportional to 35,518.50, 53,278.16 and 10,557.90

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Solution

The fourth proportional to 35,518.50, 53,278.16 and 10,557.90 is: 15,836.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,518.50 : 53,278.16 = 10,557.90 : x
  2. Step 2: Convert to fraction form
    35,518.50/53,278.16 = 10,557.90/x
  3. Step 3: Cross multiply
    35,518.50x = 53,278.16 × 10,557.90
  4. Step 4: Simplify right side
    35,518.50x = 562,505,432.67
  5. Step 5: Solve for x
    x = 562,505,432.67/35,518.50
  6. Step 6: Final answer
    x = 15,836.97

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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.