Home / 21,197.81-29,251.51-11,765.63

Finding the Fourth Proportional to 21,197.81, 29,251.51 and 11,765.63

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Solution

The fourth proportional to 21,197.81, 29,251.51 and 11,765.63 is: 16,235.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.81 : 29,251.51 = 11,765.63 : x
  2. Step 2: Convert to fraction form
    21,197.81/29,251.51 = 11,765.63/x
  3. Step 3: Cross multiply
    21,197.81x = 29,251.51 × 11,765.63
  4. Step 4: Simplify right side
    21,197.81x = 344,162,267.93
  5. Step 5: Solve for x
    x = 344,162,267.93/21,197.81
  6. Step 6: Final answer
    x = 16,235.75

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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.