Home / 20,520,939.93-28,318,460.18-11,228,472.64

Finding the Fourth Proportional to 20,520,939.93, 28,318,460.18 and 11,228,472.64

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Solution

The fourth proportional to 20,520,939.93, 28,318,460.18 and 11,228,472.64 is: 15,495,053.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520,939.93 : 28,318,460.18 = 11,228,472.64 : x
  2. Step 2: Convert to fraction form
    20,520,939.93/28,318,460.18 = 11,228,472.64/x
  3. Step 3: Cross multiply
    20,520,939.93x = 28,318,460.18 × 11,228,472.64
  4. Step 4: Simplify right side
    20,520,939.93x = 317,973,055,338,059.50
  5. Step 5: Solve for x
    x = 317,973,055,338,059.50/20,520,939.93
  6. Step 6: Final answer
    x = 15,495,053.17

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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.