Home / 21,255.54-31,884.12-10,855.14

Finding the Fourth Proportional to 21,255.54, 31,884.12 and 10,855.14

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Solution

The fourth proportional to 21,255.54, 31,884.12 and 10,855.14 is: 16,283.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.54 : 31,884.12 = 10,855.14 : x
  2. Step 2: Convert to fraction form
    21,255.54/31,884.12 = 10,855.14/x
  3. Step 3: Cross multiply
    21,255.54x = 31,884.12 × 10,855.14
  4. Step 4: Simplify right side
    21,255.54x = 346,106,586.38
  5. Step 5: Solve for x
    x = 346,106,586.38/21,255.54
  6. Step 6: Final answer
    x = 16,283.12

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1.5x scale

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.