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Finding the Fourth Proportional to 18,303.17, 27,454.75 and 7,211.03

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Solution

The fourth proportional to 18,303.17, 27,454.75 and 7,211.03 is: 10,816.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,303.17 : 27,454.75 = 7,211.03 : x
  2. Step 2: Convert to fraction form
    18,303.17/27,454.75 = 7,211.03/x
  3. Step 3: Cross multiply
    18,303.17x = 27,454.75 × 7,211.03
  4. Step 4: Simplify right side
    18,303.17x = 197,976,870.59
  5. Step 5: Solve for x
    x = 197,976,870.59/18,303.17
  6. Step 6: Final answer
    x = 10,816.54

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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.