Home / 10,015.72-13,821.58-5,539.56

Finding the Fourth Proportional to 10,015.72, 13,821.58 and 5,539.56

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Solution

The fourth proportional to 10,015.72, 13,821.58 and 5,539.56 is: 7,644.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,015.72 : 13,821.58 = 5,539.56 : x
  2. Step 2: Convert to fraction form
    10,015.72/13,821.58 = 5,539.56/x
  3. Step 3: Cross multiply
    10,015.72x = 13,821.58 × 5,539.56
  4. Step 4: Simplify right side
    10,015.72x = 76,565,471.70
  5. Step 5: Solve for x
    x = 76,565,471.70/10,015.72
  6. Step 6: Final answer
    x = 7,644.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.