Home / 20,657.36-30,986.04-5,074.98

Finding the Fourth Proportional to 20,657.36, 30,986.04 and 5,074.98

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Solution

The fourth proportional to 20,657.36, 30,986.04 and 5,074.98 is: 7,612.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.36 : 30,986.04 = 5,074.98 : x
  2. Step 2: Convert to fraction form
    20,657.36/30,986.04 = 5,074.98/x
  3. Step 3: Cross multiply
    20,657.36x = 30,986.04 × 5,074.98
  4. Step 4: Simplify right side
    20,657.36x = 157,253,533.28
  5. Step 5: Solve for x
    x = 157,253,533.28/20,657.36
  6. Step 6: Final answer
    x = 7,612.47

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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.