Home / 20,455,587.67-28,228,703.53-11,163,157.77

Finding the Fourth Proportional to 20,455,587.67, 28,228,703.53 and 11,163,157.77

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Solution

The fourth proportional to 20,455,587.67, 28,228,703.53 and 11,163,157.77 is: 15,405,153.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455,587.67 : 28,228,703.53 = 11,163,157.77 : x
  2. Step 2: Convert to fraction form
    20,455,587.67/28,228,703.53 = 11,163,157.77/x
  3. Step 3: Cross multiply
    20,455,587.67x = 28,228,703.53 × 11,163,157.77
  4. Step 4: Simplify right side
    20,455,587.67x = 315,121,471,147,945.94
  5. Step 5: Solve for x
    x = 315,121,471,147,945.94/20,455,587.67
  6. Step 6: Final answer
    x = 15,405,153.65

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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.