Home / 15,726.15-21,690.75-9,009.33

Finding the Fourth Proportional to 15,726.15, 21,690.75 and 9,009.33

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Solution

The fourth proportional to 15,726.15, 21,690.75 and 9,009.33 is: 12,426.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.15 : 21,690.75 = 9,009.33 : x
  2. Step 2: Convert to fraction form
    15,726.15/21,690.75 = 9,009.33/x
  3. Step 3: Cross multiply
    15,726.15x = 21,690.75 × 9,009.33
  4. Step 4: Simplify right side
    15,726.15x = 195,419,124.70
  5. Step 5: Solve for x
    x = 195,419,124.70/15,726.15
  6. Step 6: Final answer
    x = 12,426.38

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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.