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Finding the Fourth Proportional to 12,602.70, 18,904.05 and 3,368.70

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Solution

The fourth proportional to 12,602.70, 18,904.05 and 3,368.70 is: 5,053.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,602.70 : 18,904.05 = 3,368.70 : x
  2. Step 2: Convert to fraction form
    12,602.70/18,904.05 = 3,368.70/x
  3. Step 3: Cross multiply
    12,602.70x = 18,904.05 × 3,368.70
  4. Step 4: Simplify right side
    12,602.70x = 63,682,073.24
  5. Step 5: Solve for x
    x = 63,682,073.24/12,602.70
  6. Step 6: Final answer
    x = 5,053.05

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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.