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Finding the Fourth Proportional to 13,407,811.70, 20,111,717.55 and 4,432,363.70

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Solution

The fourth proportional to 13,407,811.70, 20,111,717.55 and 4,432,363.70 is: 6,648,545.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407,811.70 : 20,111,717.55 = 4,432,363.70 : x
  2. Step 2: Convert to fraction form
    13,407,811.70/20,111,717.55 = 4,432,363.70/x
  3. Step 3: Cross multiply
    13,407,811.70x = 20,111,717.55 × 4,432,363.70
  4. Step 4: Simplify right side
    13,407,811.70x = 89,142,446,813,272.94
  5. Step 5: Solve for x
    x = 89,142,446,813,272.94/13,407,811.70
  6. Step 6: Final answer
    x = 6,648,545.55

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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.