Home / 10,119.79-15,179.14-3,099.81

Finding the Fourth Proportional to 10,119.79, 15,179.14 and 3,099.81

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Solution

The fourth proportional to 10,119.79, 15,179.14 and 3,099.81 is: 4,649.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.79 : 15,179.14 = 3,099.81 : x
  2. Step 2: Convert to fraction form
    10,119.79/15,179.14 = 3,099.81/x
  3. Step 3: Cross multiply
    10,119.79x = 15,179.14 × 3,099.81
  4. Step 4: Simplify right side
    10,119.79x = 47,052,510.76
  5. Step 5: Solve for x
    x = 47,052,510.76/10,119.79
  6. Step 6: Final answer
    x = 4,649.55

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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.