Home / 15,796.12-21,754.32-15,451.64

Finding the Fourth Proportional to 15,796.12, 21,754.32 and 15,451.64

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Solution

The fourth proportional to 15,796.12, 21,754.32 and 15,451.64 is: 21,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,796.12 : 21,754.32 = 15,451.64 : x
  2. Step 2: Convert to fraction form
    15,796.12/21,754.32 = 15,451.64/x
  3. Step 3: Cross multiply
    15,796.12x = 21,754.32 × 15,451.64
  4. Step 4: Simplify right side
    15,796.12x = 336,139,921.08
  5. Step 5: Solve for x
    x = 336,139,921.08/15,796.12
  6. Step 6: Final answer
    x = 21,279.90

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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.