Home / 21,405.60-32,111.82-6,611.04

Finding the Fourth Proportional to 21,405.60, 32,111.82 and 6,611.04

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Solution

The fourth proportional to 21,405.60, 32,111.82 and 6,611.04 is: 9,917.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405.60 : 32,111.82 = 6,611.04 : x
  2. Step 2: Convert to fraction form
    21,405.60/32,111.82 = 6,611.04/x
  3. Step 3: Cross multiply
    21,405.60x = 32,111.82 × 6,611.04
  4. Step 4: Simplify right side
    21,405.60x = 212,292,526.49
  5. Step 5: Solve for x
    x = 212,292,526.49/21,405.60
  6. Step 6: Final answer
    x = 9,917.62

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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.