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Finding the Fourth Proportional to 12,663.95, 19,008.78 and 6,343.36

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Solution

The fourth proportional to 12,663.95, 19,008.78 and 6,343.36 is: 9,521.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663.95 : 19,008.78 = 6,343.36 : x
  2. Step 2: Convert to fraction form
    12,663.95/19,008.78 = 6,343.36/x
  3. Step 3: Cross multiply
    12,663.95x = 19,008.78 × 6,343.36
  4. Step 4: Simplify right side
    12,663.95x = 120,579,516.88
  5. Step 5: Solve for x
    x = 120,579,516.88/12,663.95
  6. Step 6: Final answer
    x = 9,521.48

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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.