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Finding the Fourth Proportional to 12,330.60, 18,498.30 and 5,310.60

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Solution

The fourth proportional to 12,330.60, 18,498.30 and 5,310.60 is: 7,966.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.60 : 18,498.30 = 5,310.60 : x
  2. Step 2: Convert to fraction form
    12,330.60/18,498.30 = 5,310.60/x
  3. Step 3: Cross multiply
    12,330.60x = 18,498.30 × 5,310.60
  4. Step 4: Simplify right side
    12,330.60x = 98,237,071.98
  5. Step 5: Solve for x
    x = 98,237,071.98/12,330.60
  6. Step 6: Final answer
    x = 7,966.93

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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.