Home / 12,784.14-19,168.11-5,393.70

Finding the Fourth Proportional to 12,784.14, 19,168.11 and 5,393.70

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Solution

The fourth proportional to 12,784.14, 19,168.11 and 5,393.70 is: 8,087.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,784.14 : 19,168.11 = 5,393.70 : x
  2. Step 2: Convert to fraction form
    12,784.14/19,168.11 = 5,393.70/x
  3. Step 3: Cross multiply
    12,784.14x = 19,168.11 × 5,393.70
  4. Step 4: Simplify right side
    12,784.14x = 103,387,034.91
  5. Step 5: Solve for x
    x = 103,387,034.91/12,784.14
  6. Step 6: Final answer
    x = 8,087.13

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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.