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Finding the Fourth Proportional to 18,339.75, 27,509.63 and 4,488.75

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Solution

The fourth proportional to 18,339.75, 27,509.63 and 4,488.75 is: 6,733.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.75 : 27,509.63 = 4,488.75 : x
  2. Step 2: Convert to fraction form
    18,339.75/27,509.63 = 4,488.75/x
  3. Step 3: Cross multiply
    18,339.75x = 27,509.63 × 4,488.75
  4. Step 4: Simplify right side
    18,339.75x = 123,483,829.22
  5. Step 5: Solve for x
    x = 123,483,829.22/18,339.75
  6. Step 6: Final answer
    x = 6,733.13

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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.