Home / 21,159.43-29,197.95-12,659.83

Finding the Fourth Proportional to 21,159.43, 29,197.95 and 12,659.83

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Solution

The fourth proportional to 21,159.43, 29,197.95 and 12,659.83 is: 17,469.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.43 : 29,197.95 = 12,659.83 : x
  2. Step 2: Convert to fraction form
    21,159.43/29,197.95 = 12,659.83/x
  3. Step 3: Cross multiply
    21,159.43x = 29,197.95 × 12,659.83
  4. Step 4: Simplify right side
    21,159.43x = 369,641,083.35
  5. Step 5: Solve for x
    x = 369,641,083.35/21,159.43
  6. Step 6: Final answer
    x = 17,469.33

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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.