Home / 13,239.94-19,855.51-5,340.42

Finding the Fourth Proportional to 13,239.94, 19,855.51 and 5,340.42

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Solution

The fourth proportional to 13,239.94, 19,855.51 and 5,340.42 is: 8,008.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.94 : 19,855.51 = 5,340.42 : x
  2. Step 2: Convert to fraction form
    13,239.94/19,855.51 = 5,340.42/x
  3. Step 3: Cross multiply
    13,239.94x = 19,855.51 × 5,340.42
  4. Step 4: Simplify right side
    13,239.94x = 106,036,762.71
  5. Step 5: Solve for x
    x = 106,036,762.71/13,239.94
  6. Step 6: Final answer
    x = 8,008.86

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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.