Home / 21,696,339.72-29,938,969.76-12,874,270.70

Finding the Fourth Proportional to 21,696,339.72, 29,938,969.76 and 12,874,270.70

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Solution

The fourth proportional to 21,696,339.72, 29,938,969.76 and 12,874,270.70 is: 17,765,319.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,696,339.72 : 29,938,969.76 = 12,874,270.70 : x
  2. Step 2: Convert to fraction form
    21,696,339.72/29,938,969.76 = 12,874,270.70/x
  3. Step 3: Cross multiply
    21,696,339.72x = 29,938,969.76 × 12,874,270.70
  4. Step 4: Simplify right side
    21,696,339.72x = 385,442,401,169,354
  5. Step 5: Solve for x
    x = 385,442,401,169,354/21,696,339.72
  6. Step 6: Final answer
    x = 17,765,319.23

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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.