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Finding the Fourth Proportional to 18,991.52, 26,206.53 and 11,033.63

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Solution

The fourth proportional to 18,991.52, 26,206.53 and 11,033.63 is: 15,225.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.52 : 26,206.53 = 11,033.63 : x
  2. Step 2: Convert to fraction form
    18,991.52/26,206.53 = 11,033.63/x
  3. Step 3: Cross multiply
    18,991.52x = 26,206.53 × 11,033.63
  4. Step 4: Simplify right side
    18,991.52x = 289,153,155.60
  5. Step 5: Solve for x
    x = 289,153,155.60/18,991.52
  6. Step 6: Final answer
    x = 15,225.38

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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.