Home / 13,906.97-20,864.16-5,587.32

Finding the Fourth Proportional to 13,906.97, 20,864.16 and 5,587.32

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Solution

The fourth proportional to 13,906.97, 20,864.16 and 5,587.32 is: 8,382.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906.97 : 20,864.16 = 5,587.32 : x
  2. Step 2: Convert to fraction form
    13,906.97/20,864.16 = 5,587.32/x
  3. Step 3: Cross multiply
    13,906.97x = 20,864.16 × 5,587.32
  4. Step 4: Simplify right side
    13,906.97x = 116,574,738.45
  5. Step 5: Solve for x
    x = 116,574,738.45/13,906.97
  6. Step 6: Final answer
    x = 8,382.47

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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.