Home / 20,319.06-30,464.28-7,828.62

Finding the Fourth Proportional to 20,319.06, 30,464.28 and 7,828.62

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Solution

The fourth proportional to 20,319.06, 30,464.28 and 7,828.62 is: 11,737.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.06 : 30,464.28 = 7,828.62 : x
  2. Step 2: Convert to fraction form
    20,319.06/30,464.28 = 7,828.62/x
  3. Step 3: Cross multiply
    20,319.06x = 30,464.28 × 7,828.62
  4. Step 4: Simplify right side
    20,319.06x = 238,493,271.69
  5. Step 5: Solve for x
    x = 238,493,271.69/20,319.06
  6. Step 6: Final answer
    x = 11,737.42

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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.