Home / 12,782.78-19,174.17-5,857.28

Finding the Fourth Proportional to 12,782.78, 19,174.17 and 5,857.28

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Solution

The fourth proportional to 12,782.78, 19,174.17 and 5,857.28 is: 8,785.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,782.78 : 19,174.17 = 5,857.28 : x
  2. Step 2: Convert to fraction form
    12,782.78/19,174.17 = 5,857.28/x
  3. Step 3: Cross multiply
    12,782.78x = 19,174.17 × 5,857.28
  4. Step 4: Simplify right side
    12,782.78x = 112,308,482.46
  5. Step 5: Solve for x
    x = 112,308,482.46/12,782.78
  6. Step 6: Final answer
    x = 8,785.92

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Similar ratio
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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.