Home / 43,119.88-64,662.30-13,528.60

Finding the Fourth Proportional to 43,119.88, 64,662.30 and 13,528.60

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Solution

The fourth proportional to 43,119.88, 64,662.30 and 13,528.60 is: 20,287.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,119.88 : 64,662.30 = 13,528.60 : x
  2. Step 2: Convert to fraction form
    43,119.88/64,662.30 = 13,528.60/x
  3. Step 3: Cross multiply
    43,119.88x = 64,662.30 × 13,528.60
  4. Step 4: Simplify right side
    43,119.88x = 874,790,391.78
  5. Step 5: Solve for x
    x = 874,790,391.78/43,119.88
  6. Step 6: Final answer
    x = 20,287.40

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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.