Home / 20,923,477.40-31,329,228.90-13,309,218.20

Finding the Fourth Proportional to 20,923,477.40, 31,329,228.90 and 13,309,218.20

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Solution

The fourth proportional to 20,923,477.40, 31,329,228.90 and 13,309,218.20 is: 19,928,214.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923,477.40 : 31,329,228.90 = 13,309,218.20 : x
  2. Step 2: Convert to fraction form
    20,923,477.40/31,329,228.90 = 13,309,218.20/x
  3. Step 3: Cross multiply
    20,923,477.40x = 31,329,228.90 × 13,309,218.20
  4. Step 4: Simplify right side
    20,923,477.40x = 416,967,543,467,845.94
  5. Step 5: Solve for x
    x = 416,967,543,467,845.94/20,923,477.40
  6. Step 6: Final answer
    x = 19,928,214.39

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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.