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Finding the Fourth Proportional to 18,555.64, 27,840.30 and 8,698.12

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Solution

The fourth proportional to 18,555.64, 27,840.30 and 8,698.12 is: 13,050.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555.64 : 27,840.30 = 8,698.12 : x
  2. Step 2: Convert to fraction form
    18,555.64/27,840.30 = 8,698.12/x
  3. Step 3: Cross multiply
    18,555.64x = 27,840.30 × 8,698.12
  4. Step 4: Simplify right side
    18,555.64x = 242,158,270.24
  5. Step 5: Solve for x
    x = 242,158,270.24/18,555.64
  6. Step 6: Final answer
    x = 13,050.39

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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.