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Finding the Fourth Proportional to 12,442.60, 18,663.90 and 5,881.60

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Solution

The fourth proportional to 12,442.60, 18,663.90 and 5,881.60 is: 8,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,442.60 : 18,663.90 = 5,881.60 : x
  2. Step 2: Convert to fraction form
    12,442.60/18,663.90 = 5,881.60/x
  3. Step 3: Cross multiply
    12,442.60x = 18,663.90 × 5,881.60
  4. Step 4: Simplify right side
    12,442.60x = 109,773,594.24
  5. Step 5: Solve for x
    x = 109,773,594.24/12,442.60
  6. Step 6: Final answer
    x = 8,822.40

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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.