Home / 20,618,688,705.15-30,915,375,640.92-8,012,828,306.19

Finding the Fourth Proportional to 20,618,688,705.15, 30,915,375,640.92 and 8,012,828,306.19

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Solution

The fourth proportional to 20,618,688,705.15, 30,915,375,640.92 and 8,012,828,306.19 is: 12,014,323,537.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618,688,705.15 : 30,915,375,640.92 = 8,012,828,306.19 : x
  2. Step 2: Convert to fraction form
    20,618,688,705.15/30,915,375,640.92 = 8,012,828,306.19/x
  3. Step 3: Cross multiply
    20,618,688,705.15x = 30,915,375,640.92 × 8,012,828,306.19
  4. Step 4: Simplify right side
    20,618,688,705.15x = 247,719,597,032,060,551,168
  5. Step 5: Solve for x
    x = 247,719,597,032,060,551,168/20,618,688,705.15
  6. Step 6: Final answer
    x = 12,014,323,537.96

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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.