Home / 28,309.28-42,469.88-11,669.18

Finding the Fourth Proportional to 28,309.28, 42,469.88 and 11,669.18

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Solution

The fourth proportional to 28,309.28, 42,469.88 and 11,669.18 is: 17,506.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.28 : 42,469.88 = 11,669.18 : x
  2. Step 2: Convert to fraction form
    28,309.28/42,469.88 = 11,669.18/x
  3. Step 3: Cross multiply
    28,309.28x = 42,469.88 × 11,669.18
  4. Step 4: Simplify right side
    28,309.28x = 495,588,403.60
  5. Step 5: Solve for x
    x = 495,588,403.60/28,309.28
  6. Step 6: Final answer
    x = 17,506.22

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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.