Home / 21,990.40-32,994.24-13,231.60

Finding the Fourth Proportional to 21,990.40, 32,994.24 and 13,231.60

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Solution

The fourth proportional to 21,990.40, 32,994.24 and 13,231.60 is: 19,852.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990.40 : 32,994.24 = 13,231.60 : x
  2. Step 2: Convert to fraction form
    21,990.40/32,994.24 = 13,231.60/x
  3. Step 3: Cross multiply
    21,990.40x = 32,994.24 × 13,231.60
  4. Step 4: Simplify right side
    21,990.40x = 436,566,585.98
  5. Step 5: Solve for x
    x = 436,566,585.98/21,990.40
  6. Step 6: Final answer
    x = 19,852.60

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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.