Home / 18,311.42-25,271.63-11,141.84

Finding the Fourth Proportional to 18,311.42, 25,271.63 and 11,141.84

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Solution

The fourth proportional to 18,311.42, 25,271.63 and 11,141.84 is: 15,376.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.42 : 25,271.63 = 11,141.84 : x
  2. Step 2: Convert to fraction form
    18,311.42/25,271.63 = 11,141.84/x
  3. Step 3: Cross multiply
    18,311.42x = 25,271.63 × 11,141.84
  4. Step 4: Simplify right side
    18,311.42x = 281,572,365.10
  5. Step 5: Solve for x
    x = 281,572,365.10/18,311.42
  6. Step 6: Final answer
    x = 15,376.87

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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.