Home / 20,776,859.60-31,165,289.40-13,124,109.20

Finding the Fourth Proportional to 20,776,859.60, 31,165,289.40 and 13,124,109.20

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Solution

The fourth proportional to 20,776,859.60, 31,165,289.40 and 13,124,109.20 is: 19,686,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776,859.60 : 31,165,289.40 = 13,124,109.20 : x
  2. Step 2: Convert to fraction form
    20,776,859.60/31,165,289.40 = 13,124,109.20/x
  3. Step 3: Cross multiply
    20,776,859.60x = 31,165,289.40 × 13,124,109.20
  4. Step 4: Simplify right side
    20,776,859.60x = 409,016,661,335,202.44
  5. Step 5: Solve for x
    x = 409,016,661,335,202.44/20,776,859.60
  6. Step 6: Final answer
    x = 19,686,163.80

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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.