Home / 15,924.82-21,977.16-8,851.69

Finding the Fourth Proportional to 15,924.82, 21,977.16 and 8,851.69

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Solution

The fourth proportional to 15,924.82, 21,977.16 and 8,851.69 is: 12,215.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,924.82 : 21,977.16 = 8,851.69 : x
  2. Step 2: Convert to fraction form
    15,924.82/21,977.16 = 8,851.69/x
  3. Step 3: Cross multiply
    15,924.82x = 21,977.16 × 8,851.69
  4. Step 4: Simplify right side
    15,924.82x = 194,535,007.40
  5. Step 5: Solve for x
    x = 194,535,007.40/15,924.82
  6. Step 6: Final answer
    x = 12,215.84

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1.5x scale

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.