Home / 20,725.72-31,104.36-15,193.12

Finding the Fourth Proportional to 20,725.72, 31,104.36 and 15,193.12

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Solution

The fourth proportional to 20,725.72, 31,104.36 and 15,193.12 is: 22,801.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.72 : 31,104.36 = 15,193.12 : x
  2. Step 2: Convert to fraction form
    20,725.72/31,104.36 = 15,193.12/x
  3. Step 3: Cross multiply
    20,725.72x = 31,104.36 × 15,193.12
  4. Step 4: Simplify right side
    20,725.72x = 472,572,274.00
  5. Step 5: Solve for x
    x = 472,572,274.00/20,725.72
  6. Step 6: Final answer
    x = 22,801.25

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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.