Home / 42,782.58-64,173.66-11,617.80

Finding the Fourth Proportional to 42,782.58, 64,173.66 and 11,617.80

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Solution

The fourth proportional to 42,782.58, 64,173.66 and 11,617.80 is: 17,426.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,782.58 : 64,173.66 = 11,617.80 : x
  2. Step 2: Convert to fraction form
    42,782.58/64,173.66 = 11,617.80/x
  3. Step 3: Cross multiply
    42,782.58x = 64,173.66 × 11,617.80
  4. Step 4: Simplify right side
    42,782.58x = 745,556,747.15
  5. Step 5: Solve for x
    x = 745,556,747.15/42,782.58
  6. Step 6: Final answer
    x = 17,426.64

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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.