Home / 12,385.52-18,578.64-5,814.80

Finding the Fourth Proportional to 12,385.52, 18,578.64 and 5,814.80

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Solution

The fourth proportional to 12,385.52, 18,578.64 and 5,814.80 is: 8,722.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.52 : 18,578.64 = 5,814.80 : x
  2. Step 2: Convert to fraction form
    12,385.52/18,578.64 = 5,814.80/x
  3. Step 3: Cross multiply
    12,385.52x = 18,578.64 × 5,814.80
  4. Step 4: Simplify right side
    12,385.52x = 108,031,075.87
  5. Step 5: Solve for x
    x = 108,031,075.87/12,385.52
  6. Step 6: Final answer
    x = 8,722.37

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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.