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Finding the Fourth Proportional to 40,545.72, 60,817.86 and 12,843

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Solution

The fourth proportional to 40,545.72, 60,817.86 and 12,843 is: 19,264.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,545.72 : 60,817.86 = 12,843 : x
  2. Step 2: Convert to fraction form
    40,545.72/60,817.86 = 12,843/x
  3. Step 3: Cross multiply
    40,545.72x = 60,817.86 × 12,843
  4. Step 4: Simplify right side
    40,545.72x = 781,083,775.98
  5. Step 5: Solve for x
    x = 781,083,775.98/40,545.72
  6. Step 6: Final answer
    x = 19,264.27

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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.