Home / 30,018.48-41,419.80-18,835.44

Finding the Fourth Proportional to 30,018.48, 41,419.80 and 18,835.44

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Solution

The fourth proportional to 30,018.48, 41,419.80 and 18,835.44 is: 25,989.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,018.48 : 41,419.80 = 18,835.44 : x
  2. Step 2: Convert to fraction form
    30,018.48/41,419.80 = 18,835.44/x
  3. Step 3: Cross multiply
    30,018.48x = 41,419.80 × 18,835.44
  4. Step 4: Simplify right side
    30,018.48x = 780,160,157.71
  5. Step 5: Solve for x
    x = 780,160,157.71/30,018.48
  6. Step 6: Final answer
    x = 25,989.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.