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Finding the Fourth Proportional to 12,558.92, 18,843.78 and 5,985.16

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Solution

The fourth proportional to 12,558.92, 18,843.78 and 5,985.16 is: 8,980.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.92 : 18,843.78 = 5,985.16 : x
  2. Step 2: Convert to fraction form
    12,558.92/18,843.78 = 5,985.16/x
  3. Step 3: Cross multiply
    12,558.92x = 18,843.78 × 5,985.16
  4. Step 4: Simplify right side
    12,558.92x = 112,783,038.30
  5. Step 5: Solve for x
    x = 112,783,038.30/12,558.92
  6. Step 6: Final answer
    x = 8,980.31

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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.