Home / 21,664.48-29,898.99-13,164.64

Finding the Fourth Proportional to 21,664.48, 29,898.99 and 13,164.64

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Solution

The fourth proportional to 21,664.48, 29,898.99 and 13,164.64 is: 18,168.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,664.48 : 29,898.99 = 13,164.64 : x
  2. Step 2: Convert to fraction form
    21,664.48/29,898.99 = 13,164.64/x
  3. Step 3: Cross multiply
    21,664.48x = 29,898.99 × 13,164.64
  4. Step 4: Simplify right side
    21,664.48x = 393,609,439.71
  5. Step 5: Solve for x
    x = 393,609,439.71/21,664.48
  6. Step 6: Final answer
    x = 18,168.42

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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.