Home / 21,104.87-31,599.85-14,855.51

Finding the Fourth Proportional to 21,104.87, 31,599.85 and 14,855.51

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Solution

The fourth proportional to 21,104.87, 31,599.85 and 14,855.51 is: 22,242.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.87 : 31,599.85 = 14,855.51 : x
  2. Step 2: Convert to fraction form
    21,104.87/31,599.85 = 14,855.51/x
  3. Step 3: Cross multiply
    21,104.87x = 31,599.85 × 14,855.51
  4. Step 4: Simplify right side
    21,104.87x = 469,431,887.67
  5. Step 5: Solve for x
    x = 469,431,887.67/21,104.87
  6. Step 6: Final answer
    x = 22,242.82

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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.