Home / 20,225.21-30,351.48-7,077.69

Finding the Fourth Proportional to 20,225.21, 30,351.48 and 7,077.69

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Solution

The fourth proportional to 20,225.21, 30,351.48 and 7,077.69 is: 10,621.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.21 : 30,351.48 = 7,077.69 : x
  2. Step 2: Convert to fraction form
    20,225.21/30,351.48 = 7,077.69/x
  3. Step 3: Cross multiply
    20,225.21x = 30,351.48 × 7,077.69
  4. Step 4: Simplify right side
    20,225.21x = 214,818,331.09
  5. Step 5: Solve for x
    x = 214,818,331.09/20,225.21
  6. Step 6: Final answer
    x = 10,621.32

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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.