Home / 20,379,429.08-28,123,611.18-11,211,875

Finding the Fourth Proportional to 20,379,429.08, 28,123,611.18 and 11,211,875

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Solution

The fourth proportional to 20,379,429.08, 28,123,611.18 and 11,211,875 is: 15,472,386.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379,429.08 : 28,123,611.18 = 11,211,875 : x
  2. Step 2: Convert to fraction form
    20,379,429.08/28,123,611.18 = 11,211,875/x
  3. Step 3: Cross multiply
    20,379,429.08x = 28,123,611.18 × 11,211,875
  4. Step 4: Simplify right side
    20,379,429.08x = 315,318,413,098,762.50
  5. Step 5: Solve for x
    x = 315,318,413,098,762.50/20,379,429.08
  6. Step 6: Final answer
    x = 15,472,386.98

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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.