Home / 21,134.53-29,165.37-11,574.31

Finding the Fourth Proportional to 21,134.53, 29,165.37 and 11,574.31

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Solution

The fourth proportional to 21,134.53, 29,165.37 and 11,574.31 is: 15,972.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.53 : 29,165.37 = 11,574.31 : x
  2. Step 2: Convert to fraction form
    21,134.53/29,165.37 = 11,574.31/x
  3. Step 3: Cross multiply
    21,134.53x = 29,165.37 × 11,574.31
  4. Step 4: Simplify right side
    21,134.53x = 337,569,033.64
  5. Step 5: Solve for x
    x = 337,569,033.64/21,134.53
  6. Step 6: Final answer
    x = 15,972.39

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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.