Home / 21,811.34-32,712.36-9,961.75

Finding the Fourth Proportional to 21,811.34, 32,712.36 and 9,961.75

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Solution

The fourth proportional to 21,811.34, 32,712.36 and 9,961.75 is: 14,940.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811.34 : 32,712.36 = 9,961.75 : x
  2. Step 2: Convert to fraction form
    21,811.34/32,712.36 = 9,961.75/x
  3. Step 3: Cross multiply
    21,811.34x = 32,712.36 × 9,961.75
  4. Step 4: Simplify right side
    21,811.34x = 325,872,355.76
  5. Step 5: Solve for x
    x = 325,872,355.76/21,811.34
  6. Step 6: Final answer
    x = 14,940.50

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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.