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Finding the Fourth Proportional to 12,663.64, 19,003.64 and 6,824.32

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Solution

The fourth proportional to 12,663.64, 19,003.64 and 6,824.32 is: 10,240.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663.64 : 19,003.64 = 6,824.32 : x
  2. Step 2: Convert to fraction form
    12,663.64/19,003.64 = 6,824.32/x
  3. Step 3: Cross multiply
    12,663.64x = 19,003.64 × 6,824.32
  4. Step 4: Simplify right side
    12,663.64x = 129,686,920.52
  5. Step 5: Solve for x
    x = 129,686,920.52/12,663.64
  6. Step 6: Final answer
    x = 10,240.89

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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.