Home / 19,766.08-27,230.34-13,787.20

Finding the Fourth Proportional to 19,766.08, 27,230.34 and 13,787.20

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Solution

The fourth proportional to 19,766.08, 27,230.34 and 13,787.20 is: 18,993.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,766.08 : 27,230.34 = 13,787.20 : x
  2. Step 2: Convert to fraction form
    19,766.08/27,230.34 = 13,787.20/x
  3. Step 3: Cross multiply
    19,766.08x = 27,230.34 × 13,787.20
  4. Step 4: Simplify right side
    19,766.08x = 375,430,143.65
  5. Step 5: Solve for x
    x = 375,430,143.65/19,766.08
  6. Step 6: Final answer
    x = 18,993.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.