Home / 21,710.54-29,958.75-12,149.93

Finding the Fourth Proportional to 21,710.54, 29,958.75 and 12,149.93

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Solution

The fourth proportional to 21,710.54, 29,958.75 and 12,149.93 is: 16,765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,710.54 : 29,958.75 = 12,149.93 : x
  2. Step 2: Convert to fraction form
    21,710.54/29,958.75 = 12,149.93/x
  3. Step 3: Cross multiply
    21,710.54x = 29,958.75 × 12,149.93
  4. Step 4: Simplify right side
    21,710.54x = 363,996,565.59
  5. Step 5: Solve for x
    x = 363,996,565.59/21,710.54
  6. Step 6: Final answer
    x = 16,765.90

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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.