Home / 42,540.24-63,813.60-12,960.60

Finding the Fourth Proportional to 42,540.24, 63,813.60 and 12,960.60

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Solution

The fourth proportional to 42,540.24, 63,813.60 and 12,960.60 is: 19,441.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,540.24 : 63,813.60 = 12,960.60 : x
  2. Step 2: Convert to fraction form
    42,540.24/63,813.60 = 12,960.60/x
  3. Step 3: Cross multiply
    42,540.24x = 63,813.60 × 12,960.60
  4. Step 4: Simplify right side
    42,540.24x = 827,062,544.16
  5. Step 5: Solve for x
    x = 827,062,544.16/42,540.24
  6. Step 6: Final answer
    x = 19,441.89

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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.