Home / 21,007,128.01-28,989,963.02-11,715,284.69

Finding the Fourth Proportional to 21,007,128.01, 28,989,963.02 and 11,715,284.69

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Solution

The fourth proportional to 21,007,128.01, 28,989,963.02 and 11,715,284.69 is: 16,167,163.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007,128.01 : 28,989,963.02 = 11,715,284.69 : x
  2. Step 2: Convert to fraction form
    21,007,128.01/28,989,963.02 = 11,715,284.69/x
  3. Step 3: Cross multiply
    21,007,128.01x = 28,989,963.02 × 11,715,284.69
  4. Step 4: Simplify right side
    21,007,128.01x = 339,625,670,033,635.31
  5. Step 5: Solve for x
    x = 339,625,670,033,635.31/21,007,128.01
  6. Step 6: Final answer
    x = 16,167,163.35

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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.