Home / 21,357.98-29,475.62-12,286.11

Finding the Fourth Proportional to 21,357.98, 29,475.62 and 12,286.11

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Solution

The fourth proportional to 21,357.98, 29,475.62 and 12,286.11 is: 16,955.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357.98 : 29,475.62 = 12,286.11 : x
  2. Step 2: Convert to fraction form
    21,357.98/29,475.62 = 12,286.11/x
  3. Step 3: Cross multiply
    21,357.98x = 29,475.62 × 12,286.11
  4. Step 4: Simplify right side
    21,357.98x = 362,140,648.21
  5. Step 5: Solve for x
    x = 362,140,648.21/21,357.98
  6. Step 6: Final answer
    x = 16,955.76

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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.