Home / 12,818.35-19,192.78-6,649.39

Finding the Fourth Proportional to 12,818.35, 19,192.78 and 6,649.39

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Solution

The fourth proportional to 12,818.35, 19,192.78 and 6,649.39 is: 9,956.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.35 : 19,192.78 = 6,649.39 : x
  2. Step 2: Convert to fraction form
    12,818.35/19,192.78 = 6,649.39/x
  3. Step 3: Cross multiply
    12,818.35x = 19,192.78 × 6,649.39
  4. Step 4: Simplify right side
    12,818.35x = 127,620,279.40
  5. Step 5: Solve for x
    x = 127,620,279.40/12,818.35
  6. Step 6: Final answer
    x = 9,956.06

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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.