Home / 13,855.52-20,782.65-5,089.79

Finding the Fourth Proportional to 13,855.52, 20,782.65 and 5,089.79

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Solution

The fourth proportional to 13,855.52, 20,782.65 and 5,089.79 is: 7,634.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.52 : 20,782.65 = 5,089.79 : x
  2. Step 2: Convert to fraction form
    13,855.52/20,782.65 = 5,089.79/x
  3. Step 3: Cross multiply
    13,855.52x = 20,782.65 × 5,089.79
  4. Step 4: Simplify right side
    13,855.52x = 105,779,395.19
  5. Step 5: Solve for x
    x = 105,779,395.19/13,855.52
  6. Step 6: Final answer
    x = 7,634.46

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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.