Home / 20,237.81-30,356.91-7,090.49

Finding the Fourth Proportional to 20,237.81, 30,356.91 and 7,090.49

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Solution

The fourth proportional to 20,237.81, 30,356.91 and 7,090.49 is: 10,635.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,237.81 : 30,356.91 = 7,090.49 : x
  2. Step 2: Convert to fraction form
    20,237.81/30,356.91 = 7,090.49/x
  3. Step 3: Cross multiply
    20,237.81x = 30,356.91 × 7,090.49
  4. Step 4: Simplify right side
    20,237.81x = 215,245,442.68
  5. Step 5: Solve for x
    x = 215,245,442.68/20,237.81
  6. Step 6: Final answer
    x = 10,635.81

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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.