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Finding the Fourth Proportional to 12,340.70, 18,511.03 and 4,020.70

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Solution

The fourth proportional to 12,340.70, 18,511.03 and 4,020.70 is: 6,031.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340.70 : 18,511.03 = 4,020.70 : x
  2. Step 2: Convert to fraction form
    12,340.70/18,511.03 = 4,020.70/x
  3. Step 3: Cross multiply
    12,340.70x = 18,511.03 × 4,020.70
  4. Step 4: Simplify right side
    12,340.70x = 74,427,298.32
  5. Step 5: Solve for x
    x = 74,427,298.32/12,340.70
  6. Step 6: Final answer
    x = 6,031.04

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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.