Home / 21,007,130.27-28,989,966.14-11,715,286.95

Finding the Fourth Proportional to 21,007,130.27, 28,989,966.14 and 11,715,286.95

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Solution

The fourth proportional to 21,007,130.27, 28,989,966.14 and 11,715,286.95 is: 16,167,166.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007,130.27 : 28,989,966.14 = 11,715,286.95 : x
  2. Step 2: Convert to fraction form
    21,007,130.27/28,989,966.14 = 11,715,286.95/x
  3. Step 3: Cross multiply
    21,007,130.27x = 28,989,966.14 × 11,715,286.95
  4. Step 4: Simplify right side
    21,007,130.27x = 339,625,771,942,307.44
  5. Step 5: Solve for x
    x = 339,625,771,942,307.44/21,007,130.27
  6. Step 6: Final answer
    x = 16,167,166.46

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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.