Home / 15,529.05-21,429.36-8,455.44

Finding the Fourth Proportional to 15,529.05, 21,429.36 and 8,455.44

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Solution

The fourth proportional to 15,529.05, 21,429.36 and 8,455.44 is: 11,668.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.05 : 21,429.36 = 8,455.44 : x
  2. Step 2: Convert to fraction form
    15,529.05/21,429.36 = 8,455.44/x
  3. Step 3: Cross multiply
    15,529.05x = 21,429.36 × 8,455.44
  4. Step 4: Simplify right side
    15,529.05x = 181,194,667.72
  5. Step 5: Solve for x
    x = 181,194,667.72/15,529.05
  6. Step 6: Final answer
    x = 11,668.11

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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.