Home / 21,380.80-32,070.48-9,685.84

Finding the Fourth Proportional to 21,380.80, 32,070.48 and 9,685.84

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Solution

The fourth proportional to 21,380.80, 32,070.48 and 9,685.84 is: 14,528.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.80 : 32,070.48 = 9,685.84 : x
  2. Step 2: Convert to fraction form
    21,380.80/32,070.48 = 9,685.84/x
  3. Step 3: Cross multiply
    21,380.80x = 32,070.48 × 9,685.84
  4. Step 4: Simplify right side
    21,380.80x = 310,629,538.00
  5. Step 5: Solve for x
    x = 310,629,538.00/21,380.80
  6. Step 6: Final answer
    x = 14,528.43

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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.