Home / 21,116.62-29,136.37-13,462.81

Finding the Fourth Proportional to 21,116.62, 29,136.37 and 13,462.81

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Solution

The fourth proportional to 21,116.62, 29,136.37 and 13,462.81 is: 18,575.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.62 : 29,136.37 = 13,462.81 : x
  2. Step 2: Convert to fraction form
    21,116.62/29,136.37 = 13,462.81/x
  3. Step 3: Cross multiply
    21,116.62x = 29,136.37 × 13,462.81
  4. Step 4: Simplify right side
    21,116.62x = 392,257,267.72
  5. Step 5: Solve for x
    x = 392,257,267.72/21,116.62
  6. Step 6: Final answer
    x = 18,575.76

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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.