Home / 18,938.64-28,408.04-5,790.96

Finding the Fourth Proportional to 18,938.64, 28,408.04 and 5,790.96

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Solution

The fourth proportional to 18,938.64, 28,408.04 and 5,790.96 is: 8,686.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.64 : 28,408.04 = 5,790.96 : x
  2. Step 2: Convert to fraction form
    18,938.64/28,408.04 = 5,790.96/x
  3. Step 3: Cross multiply
    18,938.64x = 28,408.04 × 5,790.96
  4. Step 4: Simplify right side
    18,938.64x = 164,509,823.32
  5. Step 5: Solve for x
    x = 164,509,823.32/18,938.64
  6. Step 6: Final answer
    x = 8,686.46

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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.