Home / 18,685.21-28,023.03-5,534.51

Finding the Fourth Proportional to 18,685.21, 28,023.03 and 5,534.51

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Solution

The fourth proportional to 18,685.21, 28,023.03 and 5,534.51 is: 8,300.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.21 : 28,023.03 = 5,534.51 : x
  2. Step 2: Convert to fraction form
    18,685.21/28,023.03 = 5,534.51/x
  3. Step 3: Cross multiply
    18,685.21x = 28,023.03 × 5,534.51
  4. Step 4: Simplify right side
    18,685.21x = 155,093,739.77
  5. Step 5: Solve for x
    x = 155,093,739.77/18,685.21
  6. Step 6: Final answer
    x = 8,300.35

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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.