Home / 21,561.12-32,281.70-11,008.35

Finding the Fourth Proportional to 21,561.12, 32,281.70 and 11,008.35

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Solution

The fourth proportional to 21,561.12, 32,281.70 and 11,008.35 is: 16,481.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.12 : 32,281.70 = 11,008.35 : x
  2. Step 2: Convert to fraction form
    21,561.12/32,281.70 = 11,008.35/x
  3. Step 3: Cross multiply
    21,561.12x = 32,281.70 × 11,008.35
  4. Step 4: Simplify right side
    21,561.12x = 355,368,197.15
  5. Step 5: Solve for x
    x = 355,368,197.15/21,561.12
  6. Step 6: Final answer
    x = 16,481.90

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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.