Home / 31,146.40-46,719.60-18,704.80

Finding the Fourth Proportional to 31,146.40, 46,719.60 and 18,704.80

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Solution

The fourth proportional to 31,146.40, 46,719.60 and 18,704.80 is: 28,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,146.40 : 46,719.60 = 18,704.80 : x
  2. Step 2: Convert to fraction form
    31,146.40/46,719.60 = 18,704.80/x
  3. Step 3: Cross multiply
    31,146.40x = 46,719.60 × 18,704.80
  4. Step 4: Simplify right side
    31,146.40x = 873,880,774.08
  5. Step 5: Solve for x
    x = 873,880,774.08/31,146.40
  6. Step 6: Final answer
    x = 28,057.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.