Home / 21,053.04-31,552.13-8,558.47

Finding the Fourth Proportional to 21,053.04, 31,552.13 and 8,558.47

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Solution

The fourth proportional to 21,053.04, 31,552.13 and 8,558.47 is: 12,826.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,053.04 : 31,552.13 = 8,558.47 : x
  2. Step 2: Convert to fraction form
    21,053.04/31,552.13 = 8,558.47/x
  3. Step 3: Cross multiply
    21,053.04x = 31,552.13 × 8,558.47
  4. Step 4: Simplify right side
    21,053.04x = 270,037,778.88
  5. Step 5: Solve for x
    x = 270,037,778.88/21,053.04
  6. Step 6: Final answer
    x = 12,826.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.