Home / 21,151,857.08-29,186,949.84-12,888,907.76

Finding the Fourth Proportional to 21,151,857.08, 29,186,949.84 and 12,888,907.76

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Solution

The fourth proportional to 21,151,857.08, 29,186,949.84 and 12,888,907.76 is: 17,785,100.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151,857.08 : 29,186,949.84 = 12,888,907.76 : x
  2. Step 2: Convert to fraction form
    21,151,857.08/29,186,949.84 = 12,888,907.76/x
  3. Step 3: Cross multiply
    21,151,857.08x = 29,186,949.84 × 12,888,907.76
  4. Step 4: Simplify right side
    21,151,857.08x = 376,187,904,283,506.75
  5. Step 5: Solve for x
    x = 376,187,904,283,506.75/21,151,857.08
  6. Step 6: Final answer
    x = 17,785,100.52

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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.