Home / 20,255.78-27,941.74-11,870.66

Finding the Fourth Proportional to 20,255.78, 27,941.74 and 11,870.66

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Solution

The fourth proportional to 20,255.78, 27,941.74 and 11,870.66 is: 16,374.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.78 : 27,941.74 = 11,870.66 : x
  2. Step 2: Convert to fraction form
    20,255.78/27,941.74 = 11,870.66/x
  3. Step 3: Cross multiply
    20,255.78x = 27,941.74 × 11,870.66
  4. Step 4: Simplify right side
    20,255.78x = 331,686,725.96
  5. Step 5: Solve for x
    x = 331,686,725.96/20,255.78
  6. Step 6: Final answer
    x = 16,374.92

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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.