Home / 20,670.91-28,525.26-11,719.24

Finding the Fourth Proportional to 20,670.91, 28,525.26 and 11,719.24

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Solution

The fourth proportional to 20,670.91, 28,525.26 and 11,719.24 is: 16,172.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.91 : 28,525.26 = 11,719.24 : x
  2. Step 2: Convert to fraction form
    20,670.91/28,525.26 = 11,719.24/x
  3. Step 3: Cross multiply
    20,670.91x = 28,525.26 × 11,719.24
  4. Step 4: Simplify right side
    20,670.91x = 334,294,368.00
  5. Step 5: Solve for x
    x = 334,294,368.00/20,670.91
  6. Step 6: Final answer
    x = 16,172.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.