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Finding the Fourth Proportional to 21,043, 29,039.97 and 11,612.17

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Solution

The fourth proportional to 21,043, 29,039.97 and 11,612.17 is: 16,025.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043 : 29,039.97 = 11,612.17 : x
  2. Step 2: Convert to fraction form
    21,043/29,039.97 = 11,612.17/x
  3. Step 3: Cross multiply
    21,043x = 29,039.97 × 11,612.17
  4. Step 4: Simplify right side
    21,043x = 337,217,068.43
  5. Step 5: Solve for x
    x = 337,217,068.43/21,043
  6. Step 6: Final answer
    x = 16,025.14

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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.