Home / 38,287.20-57,430.80-11,994.60

Finding the Fourth Proportional to 38,287.20, 57,430.80 and 11,994.60

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Solution

The fourth proportional to 38,287.20, 57,430.80 and 11,994.60 is: 17,991.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,287.20 : 57,430.80 = 11,994.60 : x
  2. Step 2: Convert to fraction form
    38,287.20/57,430.80 = 11,994.60/x
  3. Step 3: Cross multiply
    38,287.20x = 57,430.80 × 11,994.60
  4. Step 4: Simplify right side
    38,287.20x = 688,859,473.68
  5. Step 5: Solve for x
    x = 688,859,473.68/38,287.20
  6. Step 6: Final answer
    x = 17,991.90

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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.