Home / 43,784.64-65,667.24-12,622.32

Finding the Fourth Proportional to 43,784.64, 65,667.24 and 12,622.32

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Solution

The fourth proportional to 43,784.64, 65,667.24 and 12,622.32 is: 18,930.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,784.64 : 65,667.24 = 12,622.32 : x
  2. Step 2: Convert to fraction form
    43,784.64/65,667.24 = 12,622.32/x
  3. Step 3: Cross multiply
    43,784.64x = 65,667.24 × 12,622.32
  4. Step 4: Simplify right side
    43,784.64x = 828,872,916.80
  5. Step 5: Solve for x
    x = 828,872,916.80/43,784.64
  6. Step 6: Final answer
    x = 18,930.68

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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.