Home / 21,015.87-29,002.10-11,584.77

Finding the Fourth Proportional to 21,015.87, 29,002.10 and 11,584.77

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Solution

The fourth proportional to 21,015.87, 29,002.10 and 11,584.77 is: 15,987.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.87 : 29,002.10 = 11,584.77 : x
  2. Step 2: Convert to fraction form
    21,015.87/29,002.10 = 11,584.77/x
  3. Step 3: Cross multiply
    21,015.87x = 29,002.10 × 11,584.77
  4. Step 4: Simplify right side
    21,015.87x = 335,982,658.02
  5. Step 5: Solve for x
    x = 335,982,658.02/21,015.87
  6. Step 6: Final answer
    x = 15,987.09

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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.