Home / 21,226.60-31,838.07-7,186.33

Finding the Fourth Proportional to 21,226.60, 31,838.07 and 7,186.33

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Solution

The fourth proportional to 21,226.60, 31,838.07 and 7,186.33 is: 10,778.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.60 : 31,838.07 = 7,186.33 : x
  2. Step 2: Convert to fraction form
    21,226.60/31,838.07 = 7,186.33/x
  3. Step 3: Cross multiply
    21,226.60x = 31,838.07 × 7,186.33
  4. Step 4: Simplify right side
    21,226.60x = 228,798,877.58
  5. Step 5: Solve for x
    x = 228,798,877.58/21,226.60
  6. Step 6: Final answer
    x = 10,778.88

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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.