Home / 10,015.96-15,019.38-5,334.78

Finding the Fourth Proportional to 10,015.96, 15,019.38 and 5,334.78

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Solution

The fourth proportional to 10,015.96, 15,019.38 and 5,334.78 is: 7,999.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,015.96 : 15,019.38 = 5,334.78 : x
  2. Step 2: Convert to fraction form
    10,015.96/15,019.38 = 5,334.78/x
  3. Step 3: Cross multiply
    10,015.96x = 15,019.38 × 5,334.78
  4. Step 4: Simplify right side
    10,015.96x = 80,125,088.04
  5. Step 5: Solve for x
    x = 80,125,088.04/10,015.96
  6. Step 6: Final answer
    x = 7,999.74

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1.5x scale

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.