Home / 18,930.64-28,376.76-9,055.44

Finding the Fourth Proportional to 18,930.64, 28,376.76 and 9,055.44

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Solution

The fourth proportional to 18,930.64, 28,376.76 and 9,055.44 is: 13,573.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.64 : 28,376.76 = 9,055.44 : x
  2. Step 2: Convert to fraction form
    18,930.64/28,376.76 = 9,055.44/x
  3. Step 3: Cross multiply
    18,930.64x = 28,376.76 × 9,055.44
  4. Step 4: Simplify right side
    18,930.64x = 256,964,047.57
  5. Step 5: Solve for x
    x = 256,964,047.57/18,930.64
  6. Step 6: Final answer
    x = 13,573.98

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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.