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Finding the Fourth Proportional to 15,090.16, 22,629.48 and 8,160.88

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Solution

The fourth proportional to 15,090.16, 22,629.48 and 8,160.88 is: 12,238.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,090.16 : 22,629.48 = 8,160.88 : x
  2. Step 2: Convert to fraction form
    15,090.16/22,629.48 = 8,160.88/x
  3. Step 3: Cross multiply
    15,090.16x = 22,629.48 × 8,160.88
  4. Step 4: Simplify right side
    15,090.16x = 184,676,470.74
  5. Step 5: Solve for x
    x = 184,676,470.74/15,090.16
  6. Step 6: Final answer
    x = 12,238.20

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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.