Home / 13,456.29-20,171.34-6,434.49

Finding the Fourth Proportional to 13,456.29, 20,171.34 and 6,434.49

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Solution

The fourth proportional to 13,456.29, 20,171.34 and 6,434.49 is: 9,645.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,456.29 : 20,171.34 = 6,434.49 : x
  2. Step 2: Convert to fraction form
    13,456.29/20,171.34 = 6,434.49/x
  3. Step 3: Cross multiply
    13,456.29x = 20,171.34 × 6,434.49
  4. Step 4: Simplify right side
    13,456.29x = 129,792,285.52
  5. Step 5: Solve for x
    x = 129,792,285.52/13,456.29
  6. Step 6: Final answer
    x = 9,645.47

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1.5x scale

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.