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Finding the Fourth Proportional to 19,463.50, 26,859.72 and 11,080

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Solution

The fourth proportional to 19,463.50, 26,859.72 and 11,080 is: 15,290.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,463.50 : 26,859.72 = 11,080 : x
  2. Step 2: Convert to fraction form
    19,463.50/26,859.72 = 11,080/x
  3. Step 3: Cross multiply
    19,463.50x = 26,859.72 × 11,080
  4. Step 4: Simplify right side
    19,463.50x = 297,605,697.60
  5. Step 5: Solve for x
    x = 297,605,697.60/19,463.50
  6. Step 6: Final answer
    x = 15,290.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.