Home / 14,187.24-19,578.20-7,813.71

Finding the Fourth Proportional to 14,187.24, 19,578.20 and 7,813.71

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Solution

The fourth proportional to 14,187.24, 19,578.20 and 7,813.71 is: 10,782.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.24 : 19,578.20 = 7,813.71 : x
  2. Step 2: Convert to fraction form
    14,187.24/19,578.20 = 7,813.71/x
  3. Step 3: Cross multiply
    14,187.24x = 19,578.20 × 7,813.71
  4. Step 4: Simplify right side
    14,187.24x = 152,978,279.23
  5. Step 5: Solve for x
    x = 152,978,279.23/14,187.24
  6. Step 6: Final answer
    x = 10,782.81

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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.