Home / 21,908.24-32,890.60-18,808.16

Finding the Fourth Proportional to 21,908.24, 32,890.60 and 18,808.16

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Solution

The fourth proportional to 21,908.24, 32,890.60 and 18,808.16 is: 28,236.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.24 : 32,890.60 = 18,808.16 : x
  2. Step 2: Convert to fraction form
    21,908.24/32,890.60 = 18,808.16/x
  3. Step 3: Cross multiply
    21,908.24x = 32,890.60 × 18,808.16
  4. Step 4: Simplify right side
    21,908.24x = 618,611,667.30
  5. Step 5: Solve for x
    x = 618,611,667.30/21,908.24
  6. Step 6: Final answer
    x = 28,236.49

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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.