Home / 13,218.85-19,828.31-4,459.91

Finding the Fourth Proportional to 13,218.85, 19,828.31 and 4,459.91

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Solution

The fourth proportional to 13,218.85, 19,828.31 and 4,459.91 is: 6,689.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.85 : 19,828.31 = 4,459.91 : x
  2. Step 2: Convert to fraction form
    13,218.85/19,828.31 = 4,459.91/x
  3. Step 3: Cross multiply
    13,218.85x = 19,828.31 × 4,459.91
  4. Step 4: Simplify right side
    13,218.85x = 88,432,478.05
  5. Step 5: Solve for x
    x = 88,432,478.05/13,218.85
  6. Step 6: Final answer
    x = 6,689.88

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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.