Home / 20,928.16-31,395.61-6,884.11

Finding the Fourth Proportional to 20,928.16, 31,395.61 and 6,884.11

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Solution

The fourth proportional to 20,928.16, 31,395.61 and 6,884.11 is: 10,327.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.16 : 31,395.61 = 6,884.11 : x
  2. Step 2: Convert to fraction form
    20,928.16/31,395.61 = 6,884.11/x
  3. Step 3: Cross multiply
    20,928.16x = 31,395.61 × 6,884.11
  4. Step 4: Simplify right side
    20,928.16x = 216,130,675.78
  5. Step 5: Solve for x
    x = 216,130,675.78/20,928.16
  6. Step 6: Final answer
    x = 10,327.27

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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.