Home / 21,696,266.47-29,938,868.67-12,874,197.28

Finding the Fourth Proportional to 21,696,266.47, 29,938,868.67 and 12,874,197.28

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Solution

The fourth proportional to 21,696,266.47, 29,938,868.67 and 12,874,197.28 is: 17,765,217.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,696,266.47 : 29,938,868.67 = 12,874,197.28 : x
  2. Step 2: Convert to fraction form
    21,696,266.47/29,938,868.67 = 12,874,197.28/x
  3. Step 3: Cross multiply
    21,696,266.47x = 29,938,868.67 × 12,874,197.28
  4. Step 4: Simplify right side
    21,696,266.47x = 385,438,901,597,591.25
  5. Step 5: Solve for x
    x = 385,438,901,597,591.25/21,696,266.47
  6. Step 6: Final answer
    x = 17,765,217.91

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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.