Home / 21,292.12-29,360.86-15,906.12

Finding the Fourth Proportional to 21,292.12, 29,360.86 and 15,906.12

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Solution

The fourth proportional to 21,292.12, 29,360.86 and 15,906.12 is: 21,933.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.12 : 29,360.86 = 15,906.12 : x
  2. Step 2: Convert to fraction form
    21,292.12/29,360.86 = 15,906.12/x
  3. Step 3: Cross multiply
    21,292.12x = 29,360.86 × 15,906.12
  4. Step 4: Simplify right side
    21,292.12x = 467,017,362.46
  5. Step 5: Solve for x
    x = 467,017,362.46/21,292.12
  6. Step 6: Final answer
    x = 21,933.81

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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.