Home / 13,000.91-19,499.40-3,639.96

Finding the Fourth Proportional to 13,000.91, 19,499.40 and 3,639.96

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Solution

The fourth proportional to 13,000.91, 19,499.40 and 3,639.96 is: 5,459.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,000.91 : 19,499.40 = 3,639.96 : x
  2. Step 2: Convert to fraction form
    13,000.91/19,499.40 = 3,639.96/x
  3. Step 3: Cross multiply
    13,000.91x = 19,499.40 × 3,639.96
  4. Step 4: Simplify right side
    13,000.91x = 70,977,036.02
  5. Step 5: Solve for x
    x = 70,977,036.02/13,000.91
  6. Step 6: Final answer
    x = 5,459.39

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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.