Home / 18,977.64-28,435.31-6,490.86

Finding the Fourth Proportional to 18,977.64, 28,435.31 and 6,490.86

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Solution

The fourth proportional to 18,977.64, 28,435.31 and 6,490.86 is: 9,725.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,977.64 : 28,435.31 = 6,490.86 : x
  2. Step 2: Convert to fraction form
    18,977.64/28,435.31 = 6,490.86/x
  3. Step 3: Cross multiply
    18,977.64x = 28,435.31 × 6,490.86
  4. Step 4: Simplify right side
    18,977.64x = 184,569,477.18
  5. Step 5: Solve for x
    x = 184,569,477.18/18,977.64
  6. Step 6: Final answer
    x = 9,725.63

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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.