Home / 20,928.15-31,355.33-11,045.66

Finding the Fourth Proportional to 20,928.15, 31,355.33 and 11,045.66

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Solution

The fourth proportional to 20,928.15, 31,355.33 and 11,045.66 is: 16,549.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.15 : 31,355.33 = 11,045.66 : x
  2. Step 2: Convert to fraction form
    20,928.15/31,355.33 = 11,045.66/x
  3. Step 3: Cross multiply
    20,928.15x = 31,355.33 × 11,045.66
  4. Step 4: Simplify right side
    20,928.15x = 346,340,102.36
  5. Step 5: Solve for x
    x = 346,340,102.36/20,928.15
  6. Step 6: Final answer
    x = 16,549.01

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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.