Home / 27,980.80-41,971.20-26,905.60

Finding the Fourth Proportional to 27,980.80, 41,971.20 and 26,905.60

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Solution

The fourth proportional to 27,980.80, 41,971.20 and 26,905.60 is: 40,358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,980.80 : 41,971.20 = 26,905.60 : x
  2. Step 2: Convert to fraction form
    27,980.80/41,971.20 = 26,905.60/x
  3. Step 3: Cross multiply
    27,980.80x = 41,971.20 × 26,905.60
  4. Step 4: Simplify right side
    27,980.80x = 1,129,260,318.72
  5. Step 5: Solve for x
    x = 1,129,260,318.72/27,980.80
  6. Step 6: Final answer
    x = 40,358.40

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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.