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Finding the Fourth Proportional to 18,259.84, 27,401.10 and 11,690.74

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Solution

The fourth proportional to 18,259.84, 27,401.10 and 11,690.74 is: 17,543.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,259.84 : 27,401.10 = 11,690.74 : x
  2. Step 2: Convert to fraction form
    18,259.84/27,401.10 = 11,690.74/x
  3. Step 3: Cross multiply
    18,259.84x = 27,401.10 × 11,690.74
  4. Step 4: Simplify right side
    18,259.84x = 320,339,135.81
  5. Step 5: Solve for x
    x = 320,339,135.81/18,259.84
  6. Step 6: Final answer
    x = 17,543.37

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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.