Home / 15,293.30-21,105.51-8,578.58

Finding the Fourth Proportional to 15,293.30, 21,105.51 and 8,578.58

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Solution

The fourth proportional to 15,293.30, 21,105.51 and 8,578.58 is: 11,838.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,293.30 : 21,105.51 = 8,578.58 : x
  2. Step 2: Convert to fraction form
    15,293.30/21,105.51 = 8,578.58/x
  3. Step 3: Cross multiply
    15,293.30x = 21,105.51 × 8,578.58
  4. Step 4: Simplify right side
    15,293.30x = 181,055,305.98
  5. Step 5: Solve for x
    x = 181,055,305.98/15,293.30
  6. Step 6: Final answer
    x = 11,838.86

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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.