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Finding the Fourth Proportional to 21,811.58, 32,714.22 and 7,018.58

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Solution

The fourth proportional to 21,811.58, 32,714.22 and 7,018.58 is: 10,526.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811.58 : 32,714.22 = 7,018.58 : x
  2. Step 2: Convert to fraction form
    21,811.58/32,714.22 = 7,018.58/x
  3. Step 3: Cross multiply
    21,811.58x = 32,714.22 × 7,018.58
  4. Step 4: Simplify right side
    21,811.58x = 229,607,370.21
  5. Step 5: Solve for x
    x = 229,607,370.21/21,811.58
  6. Step 6: Final answer
    x = 10,526.86

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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.