Home / 13,186.24-19,779.31-5,395.05

Finding the Fourth Proportional to 13,186.24, 19,779.31 and 5,395.05

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Solution

The fourth proportional to 13,186.24, 19,779.31 and 5,395.05 is: 8,092.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.24 : 19,779.31 = 5,395.05 : x
  2. Step 2: Convert to fraction form
    13,186.24/19,779.31 = 5,395.05/x
  3. Step 3: Cross multiply
    13,186.24x = 19,779.31 × 5,395.05
  4. Step 4: Simplify right side
    13,186.24x = 106,710,366.42
  5. Step 5: Solve for x
    x = 106,710,366.42/13,186.24
  6. Step 6: Final answer
    x = 8,092.55

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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.