Home / 21,659.24-29,890.68-12,713.60

Finding the Fourth Proportional to 21,659.24, 29,890.68 and 12,713.60

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Solution

The fourth proportional to 21,659.24, 29,890.68 and 12,713.60 is: 17,545.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,659.24 : 29,890.68 = 12,713.60 : x
  2. Step 2: Convert to fraction form
    21,659.24/29,890.68 = 12,713.60/x
  3. Step 3: Cross multiply
    21,659.24x = 29,890.68 × 12,713.60
  4. Step 4: Simplify right side
    21,659.24x = 380,018,149.25
  5. Step 5: Solve for x
    x = 380,018,149.25/21,659.24
  6. Step 6: Final answer
    x = 17,545.31

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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.