Home / 21,426.30-29,568.15-11,994.30

Finding the Fourth Proportional to 21,426.30, 29,568.15 and 11,994.30

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Solution

The fourth proportional to 21,426.30, 29,568.15 and 11,994.30 is: 16,552.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.30 : 29,568.15 = 11,994.30 : x
  2. Step 2: Convert to fraction form
    21,426.30/29,568.15 = 11,994.30/x
  3. Step 3: Cross multiply
    21,426.30x = 29,568.15 × 11,994.30
  4. Step 4: Simplify right side
    21,426.30x = 354,649,261.55
  5. Step 5: Solve for x
    x = 354,649,261.55/21,426.30
  6. Step 6: Final answer
    x = 16,552.05

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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.