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Finding the Fourth Proportional to 18,483.57, 27,724.93 and 12,545.63

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Solution

The fourth proportional to 18,483.57, 27,724.93 and 12,545.63 is: 18,818.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.57 : 27,724.93 = 12,545.63 : x
  2. Step 2: Convert to fraction form
    18,483.57/27,724.93 = 12,545.63/x
  3. Step 3: Cross multiply
    18,483.57x = 27,724.93 × 12,545.63
  4. Step 4: Simplify right side
    18,483.57x = 347,826,874.06
  5. Step 5: Solve for x
    x = 347,826,874.06/18,483.57
  6. Step 6: Final answer
    x = 18,818.17

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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.