Home / 21,579.96-32,390.10-11,199

Finding the Fourth Proportional to 21,579.96, 32,390.10 and 11,199

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Solution

The fourth proportional to 21,579.96, 32,390.10 and 11,199 is: 16,808.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.96 : 32,390.10 = 11,199 : x
  2. Step 2: Convert to fraction form
    21,579.96/32,390.10 = 11,199/x
  3. Step 3: Cross multiply
    21,579.96x = 32,390.10 × 11,199
  4. Step 4: Simplify right side
    21,579.96x = 362,736,729.90
  5. Step 5: Solve for x
    x = 362,736,729.90/21,579.96
  6. Step 6: Final answer
    x = 16,808.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.