Home / 14,421.12-21,631.62-5,649.84

Finding the Fourth Proportional to 14,421.12, 21,631.62 and 5,649.84

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Solution

The fourth proportional to 14,421.12, 21,631.62 and 5,649.84 is: 8,474.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.12 : 21,631.62 = 5,649.84 : x
  2. Step 2: Convert to fraction form
    14,421.12/21,631.62 = 5,649.84/x
  3. Step 3: Cross multiply
    14,421.12x = 21,631.62 × 5,649.84
  4. Step 4: Simplify right side
    14,421.12x = 122,215,191.94
  5. Step 5: Solve for x
    x = 122,215,191.94/14,421.12
  6. Step 6: Final answer
    x = 8,474.74

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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.