Home / 21,329.31-29,434.74-11,769.61

Finding the Fourth Proportional to 21,329.31, 29,434.74 and 11,769.61

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Solution

The fourth proportional to 21,329.31, 29,434.74 and 11,769.61 is: 16,242.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.31 : 29,434.74 = 11,769.61 : x
  2. Step 2: Convert to fraction form
    21,329.31/29,434.74 = 11,769.61/x
  3. Step 3: Cross multiply
    21,329.31x = 29,434.74 × 11,769.61
  4. Step 4: Simplify right side
    21,329.31x = 346,435,410.25
  5. Step 5: Solve for x
    x = 346,435,410.25/21,329.31
  6. Step 6: Final answer
    x = 16,242.22

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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.