Home / 20,942,619.15-31,413,823.47-5,380,430.77

Finding the Fourth Proportional to 20,942,619.15, 31,413,823.47 and 5,380,430.77

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Solution

The fourth proportional to 20,942,619.15, 31,413,823.47 and 5,380,430.77 is: 8,070,619.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942,619.15 : 31,413,823.47 = 5,380,430.77 : x
  2. Step 2: Convert to fraction form
    20,942,619.15/31,413,823.47 = 5,380,430.77/x
  3. Step 3: Cross multiply
    20,942,619.15x = 31,413,823.47 × 5,380,430.77
  4. Step 4: Simplify right side
    20,942,619.15x = 169,019,902,244,267.03
  5. Step 5: Solve for x
    x = 169,019,902,244,267.03/20,942,619.15
  6. Step 6: Final answer
    x = 8,070,619.11

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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.