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Finding the Fourth Proportional to 12,510, 18,765 and 4,716.99

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Solution

The fourth proportional to 12,510, 18,765 and 4,716.99 is: 7,075.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510 : 18,765 = 4,716.99 : x
  2. Step 2: Convert to fraction form
    12,510/18,765 = 4,716.99/x
  3. Step 3: Cross multiply
    12,510x = 18,765 × 4,716.99
  4. Step 4: Simplify right side
    12,510x = 88,514,317.35
  5. Step 5: Solve for x
    x = 88,514,317.35/12,510
  6. Step 6: Final answer
    x = 7,075.49

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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.