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Finding the Fourth Proportional to 12,367.40, 18,545.70 and 4,969.40

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Solution

The fourth proportional to 12,367.40, 18,545.70 and 4,969.40 is: 7,451.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,367.40 : 18,545.70 = 4,969.40 : x
  2. Step 2: Convert to fraction form
    12,367.40/18,545.70 = 4,969.40/x
  3. Step 3: Cross multiply
    12,367.40x = 18,545.70 × 4,969.40
  4. Step 4: Simplify right side
    12,367.40x = 92,161,001.58
  5. Step 5: Solve for x
    x = 92,161,001.58/12,367.40
  6. Step 6: Final answer
    x = 7,451.93

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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.