Home / 43,554.40-65,331.60-12,385.60

Finding the Fourth Proportional to 43,554.40, 65,331.60 and 12,385.60

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Solution

The fourth proportional to 43,554.40, 65,331.60 and 12,385.60 is: 18,578.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,554.40 : 65,331.60 = 12,385.60 : x
  2. Step 2: Convert to fraction form
    43,554.40/65,331.60 = 12,385.60/x
  3. Step 3: Cross multiply
    43,554.40x = 65,331.60 × 12,385.60
  4. Step 4: Simplify right side
    43,554.40x = 809,171,064.96
  5. Step 5: Solve for x
    x = 809,171,064.96/43,554.40
  6. Step 6: Final answer
    x = 18,578.40

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1.5x scale

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.