Home / 15,090.45-20,827.27-8,378.22

Finding the Fourth Proportional to 15,090.45, 20,827.27 and 8,378.22

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Solution

The fourth proportional to 15,090.45, 20,827.27 and 8,378.22 is: 11,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,090.45 : 20,827.27 = 8,378.22 : x
  2. Step 2: Convert to fraction form
    15,090.45/20,827.27 = 8,378.22/x
  3. Step 3: Cross multiply
    15,090.45x = 20,827.27 × 8,378.22
  4. Step 4: Simplify right side
    15,090.45x = 174,495,450.06
  5. Step 5: Solve for x
    x = 174,495,450.06/15,090.45
  6. Step 6: Final answer
    x = 11,563.30

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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.