Home / 20,899.36-31,295.51-11,528.96

Finding the Fourth Proportional to 20,899.36, 31,295.51 and 11,528.96

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Solution

The fourth proportional to 20,899.36, 31,295.51 and 11,528.96 is: 17,263.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.36 : 31,295.51 = 11,528.96 : x
  2. Step 2: Convert to fraction form
    20,899.36/31,295.51 = 11,528.96/x
  3. Step 3: Cross multiply
    20,899.36x = 31,295.51 × 11,528.96
  4. Step 4: Simplify right side
    20,899.36x = 360,804,468.85
  5. Step 5: Solve for x
    x = 360,804,468.85/20,899.36
  6. Step 6: Final answer
    x = 17,263.90

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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.