Home / 27,090.75-40,621.50-12,291.60

Finding the Fourth Proportional to 27,090.75, 40,621.50 and 12,291.60

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Solution

The fourth proportional to 27,090.75, 40,621.50 and 12,291.60 is: 18,430.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,090.75 : 40,621.50 = 12,291.60 : x
  2. Step 2: Convert to fraction form
    27,090.75/40,621.50 = 12,291.60/x
  3. Step 3: Cross multiply
    27,090.75x = 40,621.50 × 12,291.60
  4. Step 4: Simplify right side
    27,090.75x = 499,303,153.23
  5. Step 5: Solve for x
    x = 499,303,153.23/27,090.75
  6. Step 6: Final answer
    x = 18,430.76

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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.