Home / 16,221.78-24,332.70-5,128.20

Finding the Fourth Proportional to 16,221.78, 24,332.70 and 5,128.20

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Solution

The fourth proportional to 16,221.78, 24,332.70 and 5,128.20 is: 7,692.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,221.78 : 24,332.70 = 5,128.20 : x
  2. Step 2: Convert to fraction form
    16,221.78/24,332.70 = 5,128.20/x
  3. Step 3: Cross multiply
    16,221.78x = 24,332.70 × 5,128.20
  4. Step 4: Simplify right side
    16,221.78x = 124,782,952.14
  5. Step 5: Solve for x
    x = 124,782,952.14/16,221.78
  6. Step 6: Final answer
    x = 7,692.31

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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.