Home / 18,721,406.80-28,082,110.20-8,643,710.80

Finding the Fourth Proportional to 18,721,406.80, 28,082,110.20 and 8,643,710.80

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Solution

The fourth proportional to 18,721,406.80, 28,082,110.20 and 8,643,710.80 is: 12,965,566.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,406.80 : 28,082,110.20 = 8,643,710.80 : x
  2. Step 2: Convert to fraction form
    18,721,406.80/28,082,110.20 = 8,643,710.80/x
  3. Step 3: Cross multiply
    18,721,406.80x = 28,082,110.20 × 8,643,710.80
  4. Step 4: Simplify right side
    18,721,406.80x = 242,733,639,222,530.19
  5. Step 5: Solve for x
    x = 242,733,639,222,530.19/18,721,406.80
  6. Step 6: Final answer
    x = 12,965,566.20

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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.