Home / 33,142.40-45,739.55-18,806.90

Finding the Fourth Proportional to 33,142.40, 45,739.55 and 18,806.90

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Solution

The fourth proportional to 33,142.40, 45,739.55 and 18,806.90 is: 25,955.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,142.40 : 45,739.55 = 18,806.90 : x
  2. Step 2: Convert to fraction form
    33,142.40/45,739.55 = 18,806.90/x
  3. Step 3: Cross multiply
    33,142.40x = 45,739.55 × 18,806.90
  4. Step 4: Simplify right side
    33,142.40x = 860,219,048.86
  5. Step 5: Solve for x
    x = 860,219,048.86/33,142.40
  6. Step 6: Final answer
    x = 25,955.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.