Home / 12,227.20-18,345.60-4,830.40

Finding the Fourth Proportional to 12,227.20, 18,345.60 and 4,830.40

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Solution

The fourth proportional to 12,227.20, 18,345.60 and 4,830.40 is: 7,247.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,227.20 : 18,345.60 = 4,830.40 : x
  2. Step 2: Convert to fraction form
    12,227.20/18,345.60 = 4,830.40/x
  3. Step 3: Cross multiply
    12,227.20x = 18,345.60 × 4,830.40
  4. Step 4: Simplify right side
    12,227.20x = 88,616,586.24
  5. Step 5: Solve for x
    x = 88,616,586.24/12,227.20
  6. Step 6: Final answer
    x = 7,247.50

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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.