Home / 13,186.61-19,779.99-5,395.42

Finding the Fourth Proportional to 13,186.61, 19,779.99 and 5,395.42

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Solution

The fourth proportional to 13,186.61, 19,779.99 and 5,395.42 is: 8,093.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.61 : 19,779.99 = 5,395.42 : x
  2. Step 2: Convert to fraction form
    13,186.61/19,779.99 = 5,395.42/x
  3. Step 3: Cross multiply
    13,186.61x = 19,779.99 × 5,395.42
  4. Step 4: Simplify right side
    13,186.61x = 106,721,227.77
  5. Step 5: Solve for x
    x = 106,721,227.77/13,186.61
  6. Step 6: Final answer
    x = 8,093.15

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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.