Home / 18,685.36-25,781.34-10,617.28

Finding the Fourth Proportional to 18,685.36, 25,781.34 and 10,617.28

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Solution

The fourth proportional to 18,685.36, 25,781.34 and 10,617.28 is: 14,649.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.36 : 25,781.34 = 10,617.28 : x
  2. Step 2: Convert to fraction form
    18,685.36/25,781.34 = 10,617.28/x
  3. Step 3: Cross multiply
    18,685.36x = 25,781.34 × 10,617.28
  4. Step 4: Simplify right side
    18,685.36x = 273,727,705.56
  5. Step 5: Solve for x
    x = 273,727,705.56/18,685.36
  6. Step 6: Final answer
    x = 14,649.31

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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.