Home / 21,185.25-29,235.65-11,753.88

Finding the Fourth Proportional to 21,185.25, 29,235.65 and 11,753.88

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Solution

The fourth proportional to 21,185.25, 29,235.65 and 11,753.88 is: 16,220.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.25 : 29,235.65 = 11,753.88 : x
  2. Step 2: Convert to fraction form
    21,185.25/29,235.65 = 11,753.88/x
  3. Step 3: Cross multiply
    21,185.25x = 29,235.65 × 11,753.88
  4. Step 4: Simplify right side
    21,185.25x = 343,632,263.05
  5. Step 5: Solve for x
    x = 343,632,263.05/21,185.25
  6. Step 6: Final answer
    x = 16,220.35

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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.