Home / 20,520,938.93-28,318,458.80-11,228,471.64

Finding the Fourth Proportional to 20,520,938.93, 28,318,458.80 and 11,228,471.64

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Solution

The fourth proportional to 20,520,938.93, 28,318,458.80 and 11,228,471.64 is: 15,495,051.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520,938.93 : 28,318,458.80 = 11,228,471.64 : x
  2. Step 2: Convert to fraction form
    20,520,938.93/28,318,458.80 = 11,228,471.64/x
  3. Step 3: Cross multiply
    20,520,938.93x = 28,318,458.80 × 11,228,471.64
  4. Step 4: Simplify right side
    20,520,938.93x = 317,973,011,552,379.62
  5. Step 5: Solve for x
    x = 317,973,011,552,379.62/20,520,938.93
  6. Step 6: Final answer
    x = 15,495,051.80

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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.