Home / 10,660.14-15,990.21-2,868.75

Finding the Fourth Proportional to 10,660.14, 15,990.21 and 2,868.75

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Solution

The fourth proportional to 10,660.14, 15,990.21 and 2,868.75 is: 4,303.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.14 : 15,990.21 = 2,868.75 : x
  2. Step 2: Convert to fraction form
    10,660.14/15,990.21 = 2,868.75/x
  3. Step 3: Cross multiply
    10,660.14x = 15,990.21 × 2,868.75
  4. Step 4: Simplify right side
    10,660.14x = 45,871,914.94
  5. Step 5: Solve for x
    x = 45,871,914.94/10,660.14
  6. Step 6: Final answer
    x = 4,303.13

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Similar ratio
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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.