Home / 15,349.29-21,183.24-8,634.51

Finding the Fourth Proportional to 15,349.29, 21,183.24 and 8,634.51

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Solution

The fourth proportional to 15,349.29, 21,183.24 and 8,634.51 is: 11,916.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,349.29 : 21,183.24 = 8,634.51 : x
  2. Step 2: Convert to fraction form
    15,349.29/21,183.24 = 8,634.51/x
  3. Step 3: Cross multiply
    15,349.29x = 21,183.24 × 8,634.51
  4. Step 4: Simplify right side
    15,349.29x = 182,906,897.61
  5. Step 5: Solve for x
    x = 182,906,897.61/15,349.29
  6. Step 6: Final answer
    x = 11,916.31

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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.