Home / 21,988.35-32,982.57-13,705.11

Finding the Fourth Proportional to 21,988.35, 32,982.57 and 13,705.11

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Solution

The fourth proportional to 21,988.35, 32,982.57 and 13,705.11 is: 20,557.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.35 : 32,982.57 = 13,705.11 : x
  2. Step 2: Convert to fraction form
    21,988.35/32,982.57 = 13,705.11/x
  3. Step 3: Cross multiply
    21,988.35x = 32,982.57 × 13,705.11
  4. Step 4: Simplify right side
    21,988.35x = 452,029,749.93
  5. Step 5: Solve for x
    x = 452,029,749.93/21,988.35
  6. Step 6: Final answer
    x = 20,557.69

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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.