Home / 20,379,430.58-28,123,613.25-11,211,876.50

Finding the Fourth Proportional to 20,379,430.58, 28,123,613.25 and 11,211,876.50

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Solution

The fourth proportional to 20,379,430.58, 28,123,613.25 and 11,211,876.50 is: 15,472,389.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379,430.58 : 28,123,613.25 = 11,211,876.50 : x
  2. Step 2: Convert to fraction form
    20,379,430.58/28,123,613.25 = 11,211,876.50/x
  3. Step 3: Cross multiply
    20,379,430.58x = 28,123,613.25 × 11,211,876.50
  4. Step 4: Simplify right side
    20,379,430.58x = 315,318,478,492,763.62
  5. Step 5: Solve for x
    x = 315,318,478,492,763.62/20,379,430.58
  6. Step 6: Final answer
    x = 15,472,389.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.