Home / 18,540.56-27,810.72-4,689.60

Finding the Fourth Proportional to 18,540.56, 27,810.72 and 4,689.60

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Solution

The fourth proportional to 18,540.56, 27,810.72 and 4,689.60 is: 7,034.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,540.56 : 27,810.72 = 4,689.60 : x
  2. Step 2: Convert to fraction form
    18,540.56/27,810.72 = 4,689.60/x
  3. Step 3: Cross multiply
    18,540.56x = 27,810.72 × 4,689.60
  4. Step 4: Simplify right side
    18,540.56x = 130,421,152.51
  5. Step 5: Solve for x
    x = 130,421,152.51/18,540.56
  6. Step 6: Final answer
    x = 7,034.37

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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.