Home / 10,720.11-16,079.67-2,928.90

Finding the Fourth Proportional to 10,720.11, 16,079.67 and 2,928.90

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Solution

The fourth proportional to 10,720.11, 16,079.67 and 2,928.90 is: 4,393.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.11 : 16,079.67 = 2,928.90 : x
  2. Step 2: Convert to fraction form
    10,720.11/16,079.67 = 2,928.90/x
  3. Step 3: Cross multiply
    10,720.11x = 16,079.67 × 2,928.90
  4. Step 4: Simplify right side
    10,720.11x = 47,095,745.46
  5. Step 5: Solve for x
    x = 47,095,745.46/10,720.11
  6. Step 6: Final answer
    x = 4,393.21

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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.