Home / 19,819.60-27,369.56-12,758.28

Finding the Fourth Proportional to 19,819.60, 27,369.56 and 12,758.28

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Solution

The fourth proportional to 19,819.60, 27,369.56 and 12,758.28 is: 17,618.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.60 : 27,369.56 = 12,758.28 : x
  2. Step 2: Convert to fraction form
    19,819.60/27,369.56 = 12,758.28/x
  3. Step 3: Cross multiply
    19,819.60x = 27,369.56 × 12,758.28
  4. Step 4: Simplify right side
    19,819.60x = 349,188,509.96
  5. Step 5: Solve for x
    x = 349,188,509.96/19,819.60
  6. Step 6: Final answer
    x = 17,618.34

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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.