Home / 13,488.49-20,235.17-4,128.34

Finding the Fourth Proportional to 13,488.49, 20,235.17 and 4,128.34

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Solution

The fourth proportional to 13,488.49, 20,235.17 and 4,128.34 is: 6,193.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.49 : 20,235.17 = 4,128.34 : x
  2. Step 2: Convert to fraction form
    13,488.49/20,235.17 = 4,128.34/x
  3. Step 3: Cross multiply
    13,488.49x = 20,235.17 × 4,128.34
  4. Step 4: Simplify right side
    13,488.49x = 83,537,661.72
  5. Step 5: Solve for x
    x = 83,537,661.72/13,488.49
  6. Step 6: Final answer
    x = 6,193.26

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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.