Home / 18,470.40-27,705.60-7,378.80

Finding the Fourth Proportional to 18,470.40, 27,705.60 and 7,378.80

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Solution

The fourth proportional to 18,470.40, 27,705.60 and 7,378.80 is: 11,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,470.40 : 27,705.60 = 7,378.80 : x
  2. Step 2: Convert to fraction form
    18,470.40/27,705.60 = 7,378.80/x
  3. Step 3: Cross multiply
    18,470.40x = 27,705.60 × 7,378.80
  4. Step 4: Simplify right side
    18,470.40x = 204,434,081.28
  5. Step 5: Solve for x
    x = 204,434,081.28/18,470.40
  6. Step 6: Final answer
    x = 11,068.20

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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.