Home / 12,815.04-19,230-5,419.04

Finding the Fourth Proportional to 12,815.04, 19,230 and 5,419.04

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Solution

The fourth proportional to 12,815.04, 19,230 and 5,419.04 is: 8,131.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.04 : 19,230 = 5,419.04 : x
  2. Step 2: Convert to fraction form
    12,815.04/19,230 = 5,419.04/x
  3. Step 3: Cross multiply
    12,815.04x = 19,230 × 5,419.04
  4. Step 4: Simplify right side
    12,815.04x = 104,208,139.20
  5. Step 5: Solve for x
    x = 104,208,139.20/12,815.04
  6. Step 6: Final answer
    x = 8,131.71

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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.