Home / 20,786,652.80-31,163,390.40-8,809,539.20

Finding the Fourth Proportional to 20,786,652.80, 31,163,390.40 and 8,809,539.20

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Solution

The fourth proportional to 20,786,652.80, 31,163,390.40 and 8,809,539.20 is: 13,207,278.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786,652.80 : 31,163,390.40 = 8,809,539.20 : x
  2. Step 2: Convert to fraction form
    20,786,652.80/31,163,390.40 = 8,809,539.20/x
  3. Step 3: Cross multiply
    20,786,652.80x = 31,163,390.40 × 8,809,539.20
  4. Step 4: Simplify right side
    20,786,652.80x = 274,535,109,333,703.66
  5. Step 5: Solve for x
    x = 274,535,109,333,703.66/20,786,652.80
  6. Step 6: Final answer
    x = 13,207,278.34

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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.