Home / 21,656.87-29,886.26-12,225.83

Finding the Fourth Proportional to 21,656.87, 29,886.26 and 12,225.83

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Solution

The fourth proportional to 21,656.87, 29,886.26 and 12,225.83 is: 16,871.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.87 : 29,886.26 = 12,225.83 : x
  2. Step 2: Convert to fraction form
    21,656.87/29,886.26 = 12,225.83/x
  3. Step 3: Cross multiply
    21,656.87x = 29,886.26 × 12,225.83
  4. Step 4: Simplify right side
    21,656.87x = 365,384,272.97
  5. Step 5: Solve for x
    x = 365,384,272.97/21,656.87
  6. Step 6: Final answer
    x = 16,871.52

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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.