Home / 13,114.74-19,689.27-7,787.65

Finding the Fourth Proportional to 13,114.74, 19,689.27 and 7,787.65

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Solution

The fourth proportional to 13,114.74, 19,689.27 and 7,787.65 is: 11,691.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,114.74 : 19,689.27 = 7,787.65 : x
  2. Step 2: Convert to fraction form
    13,114.74/19,689.27 = 7,787.65/x
  3. Step 3: Cross multiply
    13,114.74x = 19,689.27 × 7,787.65
  4. Step 4: Simplify right side
    13,114.74x = 153,333,143.52
  5. Step 5: Solve for x
    x = 153,333,143.52/13,114.74
  6. Step 6: Final answer
    x = 11,691.66

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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.