Home / 18,211.64-25,136.33-11,143.98

Finding the Fourth Proportional to 18,211.64, 25,136.33 and 11,143.98

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Solution

The fourth proportional to 18,211.64, 25,136.33 and 11,143.98 is: 15,381.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.64 : 25,136.33 = 11,143.98 : x
  2. Step 2: Convert to fraction form
    18,211.64/25,136.33 = 11,143.98/x
  3. Step 3: Cross multiply
    18,211.64x = 25,136.33 × 11,143.98
  4. Step 4: Simplify right side
    18,211.64x = 280,118,703.07
  5. Step 5: Solve for x
    x = 280,118,703.07/18,211.64
  6. Step 6: Final answer
    x = 15,381.30

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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.