Home / 21,555.10-32,142.29-18,933.33

Finding the Fourth Proportional to 21,555.10, 32,142.29 and 18,933.33

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Solution

The fourth proportional to 21,555.10, 32,142.29 and 18,933.33 is: 28,232.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.10 : 32,142.29 = 18,933.33 : x
  2. Step 2: Convert to fraction form
    21,555.10/32,142.29 = 18,933.33/x
  3. Step 3: Cross multiply
    21,555.10x = 32,142.29 × 18,933.33
  4. Step 4: Simplify right side
    21,555.10x = 608,560,583.53
  5. Step 5: Solve for x
    x = 608,560,583.53/21,555.10
  6. Step 6: Final answer
    x = 28,232.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.