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Finding the Fourth Proportional to 21,820.86, 32,724.14 and 7,026.21

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Solution

The fourth proportional to 21,820.86, 32,724.14 and 7,026.21 is: 10,537.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,820.86 : 32,724.14 = 7,026.21 : x
  2. Step 2: Convert to fraction form
    21,820.86/32,724.14 = 7,026.21/x
  3. Step 3: Cross multiply
    21,820.86x = 32,724.14 × 7,026.21
  4. Step 4: Simplify right side
    21,820.86x = 229,926,644.58
  5. Step 5: Solve for x
    x = 229,926,644.58/21,820.86
  6. Step 6: Final answer
    x = 10,537.01

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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.