Home / 20,395.60-28,146.16-11,897.44

Finding the Fourth Proportional to 20,395.60, 28,146.16 and 11,897.44

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Solution

The fourth proportional to 20,395.60, 28,146.16 and 11,897.44 is: 16,418.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,395.60 : 28,146.16 = 11,897.44 : x
  2. Step 2: Convert to fraction form
    20,395.60/28,146.16 = 11,897.44/x
  3. Step 3: Cross multiply
    20,395.60x = 28,146.16 × 11,897.44
  4. Step 4: Simplify right side
    20,395.60x = 334,867,249.83
  5. Step 5: Solve for x
    x = 334,867,249.83/20,395.60
  6. Step 6: Final answer
    x = 16,418.60

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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.