Home / 13,787.47-19,027.13-7,819.39

Finding the Fourth Proportional to 13,787.47, 19,027.13 and 7,819.39

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Solution

The fourth proportional to 13,787.47, 19,027.13 and 7,819.39 is: 10,790.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.47 : 19,027.13 = 7,819.39 : x
  2. Step 2: Convert to fraction form
    13,787.47/19,027.13 = 7,819.39/x
  3. Step 3: Cross multiply
    13,787.47x = 19,027.13 × 7,819.39
  4. Step 4: Simplify right side
    13,787.47x = 148,780,449.70
  5. Step 5: Solve for x
    x = 148,780,449.70/13,787.47
  6. Step 6: Final answer
    x = 10,790.99

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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.