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Finding the Fourth Proportional to 12,221.52, 18,332.16 and 4,829.40

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Solution

The fourth proportional to 12,221.52, 18,332.16 and 4,829.40 is: 7,244.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.52 : 18,332.16 = 4,829.40 : x
  2. Step 2: Convert to fraction form
    12,221.52/18,332.16 = 4,829.40/x
  3. Step 3: Cross multiply
    12,221.52x = 18,332.16 × 4,829.40
  4. Step 4: Simplify right side
    12,221.52x = 88,533,333.50
  5. Step 5: Solve for x
    x = 88,533,333.50/12,221.52
  6. Step 6: Final answer
    x = 7,244.05

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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.