Home / 14,479.95-21,720.33-5,118.65

Finding the Fourth Proportional to 14,479.95, 21,720.33 and 5,118.65

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Solution

The fourth proportional to 14,479.95, 21,720.33 and 5,118.65 is: 7,678.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,479.95 : 21,720.33 = 5,118.65 : x
  2. Step 2: Convert to fraction form
    14,479.95/21,720.33 = 5,118.65/x
  3. Step 3: Cross multiply
    14,479.95x = 21,720.33 × 5,118.65
  4. Step 4: Simplify right side
    14,479.95x = 111,178,658.55
  5. Step 5: Solve for x
    x = 111,178,658.55/14,479.95
  6. Step 6: Final answer
    x = 7,678.11

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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.