Home / 13,403.88-18,490.92-9,813.18

Finding the Fourth Proportional to 13,403.88, 18,490.92 and 9,813.18

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Solution

The fourth proportional to 13,403.88, 18,490.92 and 9,813.18 is: 13,537.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.88 : 18,490.92 = 9,813.18 : x
  2. Step 2: Convert to fraction form
    13,403.88/18,490.92 = 9,813.18/x
  3. Step 3: Cross multiply
    13,403.88x = 18,490.92 × 9,813.18
  4. Step 4: Simplify right side
    13,403.88x = 181,454,726.33
  5. Step 5: Solve for x
    x = 181,454,726.33/13,403.88
  6. Step 6: Final answer
    x = 13,537.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.