Home / 20,123.60-27,708.36-16,725.20

Finding the Fourth Proportional to 20,123.60, 27,708.36 and 16,725.20

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Solution

The fourth proportional to 20,123.60, 27,708.36 and 16,725.20 is: 23,029.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.60 : 27,708.36 = 16,725.20 : x
  2. Step 2: Convert to fraction form
    20,123.60/27,708.36 = 16,725.20/x
  3. Step 3: Cross multiply
    20,123.60x = 27,708.36 × 16,725.20
  4. Step 4: Simplify right side
    20,123.60x = 463,427,862.67
  5. Step 5: Solve for x
    x = 463,427,862.67/20,123.60
  6. Step 6: Final answer
    x = 23,029.07

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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.