Home / 28,329.29-42,462.74-11,680.19

Finding the Fourth Proportional to 28,329.29, 42,462.74 and 11,680.19

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Solution

The fourth proportional to 28,329.29, 42,462.74 and 11,680.19 is: 17,507.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,329.29 : 42,462.74 = 11,680.19 : x
  2. Step 2: Convert to fraction form
    28,329.29/42,462.74 = 11,680.19/x
  3. Step 3: Cross multiply
    28,329.29x = 42,462.74 × 11,680.19
  4. Step 4: Simplify right side
    28,329.29x = 495,972,871.12
  5. Step 5: Solve for x
    x = 495,972,871.12/28,329.29
  6. Step 6: Final answer
    x = 17,507.42

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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.