Home / 20,477.93-30,708.37-7,148.07

Finding the Fourth Proportional to 20,477.93, 30,708.37 and 7,148.07

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Solution

The fourth proportional to 20,477.93, 30,708.37 and 7,148.07 is: 10,719.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.93 : 30,708.37 = 7,148.07 : x
  2. Step 2: Convert to fraction form
    20,477.93/30,708.37 = 7,148.07/x
  3. Step 3: Cross multiply
    20,477.93x = 30,708.37 × 7,148.07
  4. Step 4: Simplify right side
    20,477.93x = 219,505,578.35
  5. Step 5: Solve for x
    x = 219,505,578.35/20,477.93
  6. Step 6: Final answer
    x = 10,719.13

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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.