Home / 20,180.34-27,862.60-12,629.72

Finding the Fourth Proportional to 20,180.34, 27,862.60 and 12,629.72

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Solution

The fourth proportional to 20,180.34, 27,862.60 and 12,629.72 is: 17,437.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.34 : 27,862.60 = 12,629.72 : x
  2. Step 2: Convert to fraction form
    20,180.34/27,862.60 = 12,629.72/x
  3. Step 3: Cross multiply
    20,180.34x = 27,862.60 × 12,629.72
  4. Step 4: Simplify right side
    20,180.34x = 351,896,836.47
  5. Step 5: Solve for x
    x = 351,896,836.47/20,180.34
  6. Step 6: Final answer
    x = 17,437.61

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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.