Home / 22,178.60-30,606.76-13,231.28

Finding the Fourth Proportional to 22,178.60, 30,606.76 and 13,231.28

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Solution

The fourth proportional to 22,178.60, 30,606.76 and 13,231.28 is: 18,259.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,178.60 : 30,606.76 = 13,231.28 : x
  2. Step 2: Convert to fraction form
    22,178.60/30,606.76 = 13,231.28/x
  3. Step 3: Cross multiply
    22,178.60x = 30,606.76 × 13,231.28
  4. Step 4: Simplify right side
    22,178.60x = 404,966,611.45
  5. Step 5: Solve for x
    x = 404,966,611.45/22,178.60
  6. Step 6: Final answer
    x = 18,259.34

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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.