Home / 21,820.62-32,707.64-12,440.44

Finding the Fourth Proportional to 21,820.62, 32,707.64 and 12,440.44

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Solution

The fourth proportional to 21,820.62, 32,707.64 and 12,440.44 is: 18,647.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,820.62 : 32,707.64 = 12,440.44 : x
  2. Step 2: Convert to fraction form
    21,820.62/32,707.64 = 12,440.44/x
  3. Step 3: Cross multiply
    21,820.62x = 32,707.64 × 12,440.44
  4. Step 4: Simplify right side
    21,820.62x = 406,897,479.84
  5. Step 5: Solve for x
    x = 406,897,479.84/21,820.62
  6. Step 6: Final answer
    x = 18,647.38

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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.