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Finding the Fourth Proportional to 18,363.60, 27,545.40 and 10,976.40

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Solution

The fourth proportional to 18,363.60, 27,545.40 and 10,976.40 is: 16,464.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,363.60 : 27,545.40 = 10,976.40 : x
  2. Step 2: Convert to fraction form
    18,363.60/27,545.40 = 10,976.40/x
  3. Step 3: Cross multiply
    18,363.60x = 27,545.40 × 10,976.40
  4. Step 4: Simplify right side
    18,363.60x = 302,349,328.56
  5. Step 5: Solve for x
    x = 302,349,328.56/18,363.60
  6. Step 6: Final answer
    x = 16,464.60

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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.