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Finding the Fourth Proportional to 19,500.89, 26,911.20 and 11,003

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Solution

The fourth proportional to 19,500.89, 26,911.20 and 11,003 is: 15,184.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,500.89 : 26,911.20 = 11,003 : x
  2. Step 2: Convert to fraction form
    19,500.89/26,911.20 = 11,003/x
  3. Step 3: Cross multiply
    19,500.89x = 26,911.20 × 11,003
  4. Step 4: Simplify right side
    19,500.89x = 296,103,933.60
  5. Step 5: Solve for x
    x = 296,103,933.60/19,500.89
  6. Step 6: Final answer
    x = 15,184.12

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1.5x scale

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.