Home / 15,906.49-21,956.85-13,659.34

Finding the Fourth Proportional to 15,906.49, 21,956.85 and 13,659.34

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Solution

The fourth proportional to 15,906.49, 21,956.85 and 13,659.34 is: 18,854.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,906.49 : 21,956.85 = 13,659.34 : x
  2. Step 2: Convert to fraction form
    15,906.49/21,956.85 = 13,659.34/x
  3. Step 3: Cross multiply
    15,906.49x = 21,956.85 × 13,659.34
  4. Step 4: Simplify right side
    15,906.49x = 299,916,079.48
  5. Step 5: Solve for x
    x = 299,916,079.48/15,906.49
  6. Step 6: Final answer
    x = 18,854.95

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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.