Home / 31,369.76-43,271.26-18,614.55

Finding the Fourth Proportional to 31,369.76, 43,271.26 and 18,614.55

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Solution

The fourth proportional to 31,369.76, 43,271.26 and 18,614.55 is: 25,676.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,369.76 : 43,271.26 = 18,614.55 : x
  2. Step 2: Convert to fraction form
    31,369.76/43,271.26 = 18,614.55/x
  3. Step 3: Cross multiply
    31,369.76x = 43,271.26 × 18,614.55
  4. Step 4: Simplify right side
    31,369.76x = 805,474,986.30
  5. Step 5: Solve for x
    x = 805,474,986.30/31,369.76
  6. Step 6: Final answer
    x = 25,676.80

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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.