Home / 30,290.09-41,802.35-18,354.60

Finding the Fourth Proportional to 30,290.09, 41,802.35 and 18,354.60

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Solution

The fourth proportional to 30,290.09, 41,802.35 and 18,354.60 is: 25,330.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,290.09 : 41,802.35 = 18,354.60 : x
  2. Step 2: Convert to fraction form
    30,290.09/41,802.35 = 18,354.60/x
  3. Step 3: Cross multiply
    30,290.09x = 41,802.35 × 18,354.60
  4. Step 4: Simplify right side
    30,290.09x = 767,265,321.54
  5. Step 5: Solve for x
    x = 767,265,321.54/30,290.09
  6. Step 6: Final answer
    x = 25,330.58

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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.