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Finding the Fourth Proportional to 12,037.78, 18,056.85 and 7,904.08

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Solution

The fourth proportional to 12,037.78, 18,056.85 and 7,904.08 is: 11,856.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,037.78 : 18,056.85 = 7,904.08 : x
  2. Step 2: Convert to fraction form
    12,037.78/18,056.85 = 7,904.08/x
  3. Step 3: Cross multiply
    12,037.78x = 18,056.85 × 7,904.08
  4. Step 4: Simplify right side
    12,037.78x = 142,722,786.95
  5. Step 5: Solve for x
    x = 142,722,786.95/12,037.78
  6. Step 6: Final answer
    x = 11,856.24

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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.