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Finding the Fourth Proportional to 17,812.96, 26,710.81 and 7,278.80

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Solution

The fourth proportional to 17,812.96, 26,710.81 and 7,278.80 is: 10,914.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,812.96 : 26,710.81 = 7,278.80 : x
  2. Step 2: Convert to fraction form
    17,812.96/26,710.81 = 7,278.80/x
  3. Step 3: Cross multiply
    17,812.96x = 26,710.81 × 7,278.80
  4. Step 4: Simplify right side
    17,812.96x = 194,422,643.83
  5. Step 5: Solve for x
    x = 194,422,643.83/17,812.96
  6. Step 6: Final answer
    x = 10,914.67

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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.