Home / 20,774.48-31,158.99-5,782.59

Finding the Fourth Proportional to 20,774.48, 31,158.99 and 5,782.59

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Solution

The fourth proportional to 20,774.48, 31,158.99 and 5,782.59 is: 8,673.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.48 : 31,158.99 = 5,782.59 : x
  2. Step 2: Convert to fraction form
    20,774.48/31,158.99 = 5,782.59/x
  3. Step 3: Cross multiply
    20,774.48x = 31,158.99 × 5,782.59
  4. Step 4: Simplify right side
    20,774.48x = 180,179,663.98
  5. Step 5: Solve for x
    x = 180,179,663.98/20,774.48
  6. Step 6: Final answer
    x = 8,673.13

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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.