Home / 20,125.03-27,782.54-12,575.55

Finding the Fourth Proportional to 20,125.03, 27,782.54 and 12,575.55

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Solution

The fourth proportional to 20,125.03, 27,782.54 and 12,575.55 is: 17,360.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.03 : 27,782.54 = 12,575.55 : x
  2. Step 2: Convert to fraction form
    20,125.03/27,782.54 = 12,575.55/x
  3. Step 3: Cross multiply
    20,125.03x = 27,782.54 × 12,575.55
  4. Step 4: Simplify right side
    20,125.03x = 349,380,720.90
  5. Step 5: Solve for x
    x = 349,380,720.90/20,125.03
  6. Step 6: Final answer
    x = 17,360.51

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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.