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Finding the Fourth Proportional to 18,045.60, 27,070.88 and 8,187.36

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Solution

The fourth proportional to 18,045.60, 27,070.88 and 8,187.36 is: 12,282.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,045.60 : 27,070.88 = 8,187.36 : x
  2. Step 2: Convert to fraction form
    18,045.60/27,070.88 = 8,187.36/x
  3. Step 3: Cross multiply
    18,045.60x = 27,070.88 × 8,187.36
  4. Step 4: Simplify right side
    18,045.60x = 221,639,040.08
  5. Step 5: Solve for x
    x = 221,639,040.08/18,045.60
  6. Step 6: Final answer
    x = 12,282.17

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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.