Home / 20,742,085.80-31,098,383.10-7,957,650.60

Finding the Fourth Proportional to 20,742,085.80, 31,098,383.10 and 7,957,650.60

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Solution

The fourth proportional to 20,742,085.80, 31,098,383.10 and 7,957,650.60 is: 11,930,818.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742,085.80 : 31,098,383.10 = 7,957,650.60 : x
  2. Step 2: Convert to fraction form
    20,742,085.80/31,098,383.10 = 7,957,650.60/x
  3. Step 3: Cross multiply
    20,742,085.80x = 31,098,383.10 × 7,957,650.60
  4. Step 4: Simplify right side
    20,742,085.80x = 247,470,066,934,744.88
  5. Step 5: Solve for x
    x = 247,470,066,934,744.88/20,742,085.80
  6. Step 6: Final answer
    x = 11,930,818.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.