Home / 21,420,215.60-29,560,411.32-11,631,072.56

Finding the Fourth Proportional to 21,420,215.60, 29,560,411.32 and 11,631,072.56

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Solution

The fourth proportional to 21,420,215.60, 29,560,411.32 and 11,631,072.56 is: 16,051,159.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420,215.60 : 29,560,411.32 = 11,631,072.56 : x
  2. Step 2: Convert to fraction form
    21,420,215.60/29,560,411.32 = 11,631,072.56/x
  3. Step 3: Cross multiply
    21,420,215.60x = 29,560,411.32 × 11,631,072.56
  4. Step 4: Simplify right side
    21,420,215.60x = 343,819,288,966,365.38
  5. Step 5: Solve for x
    x = 343,819,288,966,365.38/21,420,215.60
  6. Step 6: Final answer
    x = 16,051,159.12

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1.5x scale

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.