Home / 14,187.30-19,578.27-7,813.74

Finding the Fourth Proportional to 14,187.30, 19,578.27 and 7,813.74

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Solution

The fourth proportional to 14,187.30, 19,578.27 and 7,813.74 is: 10,782.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.30 : 19,578.27 = 7,813.74 : x
  2. Step 2: Convert to fraction form
    14,187.30/19,578.27 = 7,813.74/x
  3. Step 3: Cross multiply
    14,187.30x = 19,578.27 × 7,813.74
  4. Step 4: Simplify right side
    14,187.30x = 152,979,511.43
  5. Step 5: Solve for x
    x = 152,979,511.43/14,187.30
  6. Step 6: Final answer
    x = 10,782.85

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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.