Home / 42,771.46-64,168.26-13,188.64

Finding the Fourth Proportional to 42,771.46, 64,168.26 and 13,188.64

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Solution

The fourth proportional to 42,771.46, 64,168.26 and 13,188.64 is: 19,786.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,771.46 : 64,168.26 = 13,188.64 : x
  2. Step 2: Convert to fraction form
    42,771.46/64,168.26 = 13,188.64/x
  3. Step 3: Cross multiply
    42,771.46x = 64,168.26 × 13,188.64
  4. Step 4: Simplify right side
    42,771.46x = 846,292,080.57
  5. Step 5: Solve for x
    x = 846,292,080.57/42,771.46
  6. Step 6: Final answer
    x = 19,786.37

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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.