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Finding the Fourth Proportional to 17,958.74, 26,938.12 and 4,810.78

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Solution

The fourth proportional to 17,958.74, 26,938.12 and 4,810.78 is: 7,216.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,958.74 : 26,938.12 = 4,810.78 : x
  2. Step 2: Convert to fraction form
    17,958.74/26,938.12 = 4,810.78/x
  3. Step 3: Cross multiply
    17,958.74x = 26,938.12 × 4,810.78
  4. Step 4: Simplify right side
    17,958.74x = 129,593,368.93
  5. Step 5: Solve for x
    x = 129,593,368.93/17,958.74
  6. Step 6: Final answer
    x = 7,216.17

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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.