Home / 20,781,011.70-31,172,230.35-6,403,965.30

Finding the Fourth Proportional to 20,781,011.70, 31,172,230.35 and 6,403,965.30

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Solution

The fourth proportional to 20,781,011.70, 31,172,230.35 and 6,403,965.30 is: 9,606,167.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,011.70 : 31,172,230.35 = 6,403,965.30 : x
  2. Step 2: Convert to fraction form
    20,781,011.70/31,172,230.35 = 6,403,965.30/x
  3. Step 3: Cross multiply
    20,781,011.70x = 31,172,230.35 × 6,403,965.30
  4. Step 4: Simplify right side
    20,781,011.70x = 199,625,881,485,006.84
  5. Step 5: Solve for x
    x = 199,625,881,485,006.84/20,781,011.70
  6. Step 6: Final answer
    x = 9,606,167.61

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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.