Home / 21,272.83-29,356.01-13,319.44

Finding the Fourth Proportional to 21,272.83, 29,356.01 and 13,319.44

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Solution

The fourth proportional to 21,272.83, 29,356.01 and 13,319.44 is: 18,380.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.83 : 29,356.01 = 13,319.44 : x
  2. Step 2: Convert to fraction form
    21,272.83/29,356.01 = 13,319.44/x
  3. Step 3: Cross multiply
    21,272.83x = 29,356.01 × 13,319.44
  4. Step 4: Simplify right side
    21,272.83x = 391,005,613.83
  5. Step 5: Solve for x
    x = 391,005,613.83/21,272.83
  6. Step 6: Final answer
    x = 18,380.52

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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.