Home / 13,779.24-19,009.26-8,187

Finding the Fourth Proportional to 13,779.24, 19,009.26 and 8,187

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Solution

The fourth proportional to 13,779.24, 19,009.26 and 8,187 is: 11,294.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.24 : 19,009.26 = 8,187 : x
  2. Step 2: Convert to fraction form
    13,779.24/19,009.26 = 8,187/x
  3. Step 3: Cross multiply
    13,779.24x = 19,009.26 × 8,187
  4. Step 4: Simplify right side
    13,779.24x = 155,628,811.62
  5. Step 5: Solve for x
    x = 155,628,811.62/13,779.24
  6. Step 6: Final answer
    x = 11,294.44

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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.