Home / 20,510,379.70-28,301,179.60-11,806,870.56

Finding the Fourth Proportional to 20,510,379.70, 28,301,179.60 and 11,806,870.56

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Solution

The fourth proportional to 20,510,379.70, 28,301,179.60 and 11,806,870.56 is: 16,291,671.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510,379.70 : 28,301,179.60 = 11,806,870.56 : x
  2. Step 2: Convert to fraction form
    20,510,379.70/28,301,179.60 = 11,806,870.56/x
  3. Step 3: Cross multiply
    20,510,379.70x = 28,301,179.60 × 11,806,870.56
  4. Step 4: Simplify right side
    20,510,379.70x = 334,148,364,232,512.62
  5. Step 5: Solve for x
    x = 334,148,364,232,512.62/20,510,379.70
  6. Step 6: Final answer
    x = 16,291,671.30

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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.