Home / 10,056.32-15,078.96-7,989.56

Finding the Fourth Proportional to 10,056.32, 15,078.96 and 7,989.56

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Solution

The fourth proportional to 10,056.32, 15,078.96 and 7,989.56 is: 11,979.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,056.32 : 15,078.96 = 7,989.56 : x
  2. Step 2: Convert to fraction form
    10,056.32/15,078.96 = 7,989.56/x
  3. Step 3: Cross multiply
    10,056.32x = 15,078.96 × 7,989.56
  4. Step 4: Simplify right side
    10,056.32x = 120,474,255.66
  5. Step 5: Solve for x
    x = 120,474,255.66/10,056.32
  6. Step 6: Final answer
    x = 11,979.95

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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.