Home / 12,787.29-19,180.89-5,759.08

Finding the Fourth Proportional to 12,787.29, 19,180.89 and 5,759.08

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Solution

The fourth proportional to 12,787.29, 19,180.89 and 5,759.08 is: 8,638.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.29 : 19,180.89 = 5,759.08 : x
  2. Step 2: Convert to fraction form
    12,787.29/19,180.89 = 5,759.08/x
  3. Step 3: Cross multiply
    12,787.29x = 19,180.89 × 5,759.08
  4. Step 4: Simplify right side
    12,787.29x = 110,464,279.98
  5. Step 5: Solve for x
    x = 110,464,279.98/12,787.29
  6. Step 6: Final answer
    x = 8,638.60

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1.5x scale

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.