Home / 21,520,401.90-29,697,912.89-11,730,631.28

Finding the Fourth Proportional to 21,520,401.90, 29,697,912.89 and 11,730,631.28

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Solution

The fourth proportional to 21,520,401.90, 29,697,912.89 and 11,730,631.28 is: 16,188,139.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520,401.90 : 29,697,912.89 = 11,730,631.28 : x
  2. Step 2: Convert to fraction form
    21,520,401.90/29,697,912.89 = 11,730,631.28/x
  3. Step 3: Cross multiply
    21,520,401.90x = 29,697,912.89 × 11,730,631.28
  4. Step 4: Simplify right side
    21,520,401.90x = 348,375,265,839,496.06
  5. Step 5: Solve for x
    x = 348,375,265,839,496.06/21,520,401.90
  6. Step 6: Final answer
    x = 16,188,139.40

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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.