Home / 20,790,866.24-31,161,808.28-8,487,145.60

Finding the Fourth Proportional to 20,790,866.24, 31,161,808.28 and 8,487,145.60

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Solution

The fourth proportional to 20,790,866.24, 31,161,808.28 and 8,487,145.60 is: 12,720,720.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,866.24 : 31,161,808.28 = 8,487,145.60 : x
  2. Step 2: Convert to fraction form
    20,790,866.24/31,161,808.28 = 8,487,145.60/x
  3. Step 3: Cross multiply
    20,790,866.24x = 31,161,808.28 × 8,487,145.60
  4. Step 4: Simplify right side
    20,790,866.24x = 264,474,804,031,645.56
  5. Step 5: Solve for x
    x = 264,474,804,031,645.56/20,790,866.24
  6. Step 6: Final answer
    x = 12,720,720.77

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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.