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Finding the Fourth Proportional to 17,802.78, 26,708.90 and 5,322.84

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Solution

The fourth proportional to 17,802.78, 26,708.90 and 5,322.84 is: 7,985.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,802.78 : 26,708.90 = 5,322.84 : x
  2. Step 2: Convert to fraction form
    17,802.78/26,708.90 = 5,322.84/x
  3. Step 3: Cross multiply
    17,802.78x = 26,708.90 × 5,322.84
  4. Step 4: Simplify right side
    17,802.78x = 142,167,174.66
  5. Step 5: Solve for x
    x = 142,167,174.66/17,802.78
  6. Step 6: Final answer
    x = 7,985.67

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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.