Home / 12,147.24-18,221.98-4,752.28

Finding the Fourth Proportional to 12,147.24, 18,221.98 and 4,752.28

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Solution

The fourth proportional to 12,147.24, 18,221.98 and 4,752.28 is: 7,128.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.24 : 18,221.98 = 4,752.28 : x
  2. Step 2: Convert to fraction form
    12,147.24/18,221.98 = 4,752.28/x
  3. Step 3: Cross multiply
    12,147.24x = 18,221.98 × 4,752.28
  4. Step 4: Simplify right side
    12,147.24x = 86,595,951.11
  5. Step 5: Solve for x
    x = 86,595,951.11/12,147.24
  6. Step 6: Final answer
    x = 7,128.86

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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.