Home / 20,157,032.73-30,217,644.86-7,858,161.21

Finding the Fourth Proportional to 20,157,032.73, 30,217,644.86 and 7,858,161.21

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Solution

The fourth proportional to 20,157,032.73, 30,217,644.86 and 7,858,161.21 is: 11,780,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157,032.73 : 30,217,644.86 = 7,858,161.21 : x
  2. Step 2: Convert to fraction form
    20,157,032.73/30,217,644.86 = 7,858,161.21/x
  3. Step 3: Cross multiply
    20,157,032.73x = 30,217,644.86 × 7,858,161.21
  4. Step 4: Simplify right side
    20,157,032.73x = 237,455,124,657,117.06
  5. Step 5: Solve for x
    x = 237,455,124,657,117.06/20,157,032.73
  6. Step 6: Final answer
    x = 11,780,261.90

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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.