Home / 20,790,167.21-31,163,259.75-7,830,710.52

Finding the Fourth Proportional to 20,790,167.21, 31,163,259.75 and 7,830,710.52

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Solution

The fourth proportional to 20,790,167.21, 31,163,259.75 and 7,830,710.52 is: 11,737,782.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,167.21 : 31,163,259.75 = 7,830,710.52 : x
  2. Step 2: Convert to fraction form
    20,790,167.21/31,163,259.75 = 7,830,710.52/x
  3. Step 3: Cross multiply
    20,790,167.21x = 31,163,259.75 × 7,830,710.52
  4. Step 4: Simplify right side
    20,790,167.21x = 244,030,465,961,817.56
  5. Step 5: Solve for x
    x = 244,030,465,961,817.56/20,790,167.21
  6. Step 6: Final answer
    x = 11,737,782.75

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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.