Home / 20,870,605.15-28,801,468.99-11,578,175.46

Finding the Fourth Proportional to 20,870,605.15, 28,801,468.99 and 11,578,175.46

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Solution

The fourth proportional to 20,870,605.15, 28,801,468.99 and 11,578,175.46 is: 15,977,900.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870,605.15 : 28,801,468.99 = 11,578,175.46 : x
  2. Step 2: Convert to fraction form
    20,870,605.15/28,801,468.99 = 11,578,175.46/x
  3. Step 3: Cross multiply
    20,870,605.15x = 28,801,468.99 × 11,578,175.46
  4. Step 4: Simplify right side
    20,870,605.15x = 333,468,461,270,070.75
  5. Step 5: Solve for x
    x = 333,468,461,270,070.75/20,870,605.15
  6. Step 6: Final answer
    x = 15,977,900.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.