Home / 20,292.44-27,985.44-12,739.47

Finding the Fourth Proportional to 20,292.44, 27,985.44 and 12,739.47

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Solution

The fourth proportional to 20,292.44, 27,985.44 and 12,739.47 is: 17,569.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.44 : 27,985.44 = 12,739.47 : x
  2. Step 2: Convert to fraction form
    20,292.44/27,985.44 = 12,739.47/x
  3. Step 3: Cross multiply
    20,292.44x = 27,985.44 × 12,739.47
  4. Step 4: Simplify right side
    20,292.44x = 356,519,752.86
  5. Step 5: Solve for x
    x = 356,519,752.86/20,292.44
  6. Step 6: Final answer
    x = 17,569.09

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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.