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Finding the Fourth Proportional to 18,048.32, 27,075.90 and 8,188.40

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Solution

The fourth proportional to 18,048.32, 27,075.90 and 8,188.40 is: 12,284.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,048.32 : 27,075.90 = 8,188.40 : x
  2. Step 2: Convert to fraction form
    18,048.32/27,075.90 = 8,188.40/x
  3. Step 3: Cross multiply
    18,048.32x = 27,075.90 × 8,188.40
  4. Step 4: Simplify right side
    18,048.32x = 221,708,164.18
  5. Step 5: Solve for x
    x = 221,708,164.18/18,048.32
  6. Step 6: Final answer
    x = 12,284.15

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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.