Home / 12,279.07-18,424.10-6,434.34

Finding the Fourth Proportional to 12,279.07, 18,424.10 and 6,434.34

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Solution

The fourth proportional to 12,279.07, 18,424.10 and 6,434.34 is: 9,654.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.07 : 18,424.10 = 6,434.34 : x
  2. Step 2: Convert to fraction form
    12,279.07/18,424.10 = 6,434.34/x
  3. Step 3: Cross multiply
    12,279.07x = 18,424.10 × 6,434.34
  4. Step 4: Simplify right side
    12,279.07x = 118,546,923.59
  5. Step 5: Solve for x
    x = 118,546,923.59/12,279.07
  6. Step 6: Final answer
    x = 9,654.39

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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.