Home / 18,540.18-27,828.77-8,686.53

Finding the Fourth Proportional to 18,540.18, 27,828.77 and 8,686.53

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Solution

The fourth proportional to 18,540.18, 27,828.77 and 8,686.53 is: 13,038.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,540.18 : 27,828.77 = 8,686.53 : x
  2. Step 2: Convert to fraction form
    18,540.18/27,828.77 = 8,686.53/x
  3. Step 3: Cross multiply
    18,540.18x = 27,828.77 × 8,686.53
  4. Step 4: Simplify right side
    18,540.18x = 241,735,402.04
  5. Step 5: Solve for x
    x = 241,735,402.04/18,540.18
  6. Step 6: Final answer
    x = 13,038.46

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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.