Home / 21,662.48-29,896.23-13,162.64

Finding the Fourth Proportional to 21,662.48, 29,896.23 and 13,162.64

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Solution

The fourth proportional to 21,662.48, 29,896.23 and 13,162.64 is: 18,165.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,662.48 : 29,896.23 = 13,162.64 : x
  2. Step 2: Convert to fraction form
    21,662.48/29,896.23 = 13,162.64/x
  3. Step 3: Cross multiply
    21,662.48x = 29,896.23 × 13,162.64
  4. Step 4: Simplify right side
    21,662.48x = 393,513,312.85
  5. Step 5: Solve for x
    x = 393,513,312.85/21,662.48
  6. Step 6: Final answer
    x = 18,165.66

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1.5x scale

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.