Home / 12,719.42-19,090.11-8,826.56

Finding the Fourth Proportional to 12,719.42, 19,090.11 and 8,826.56

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Solution

The fourth proportional to 12,719.42, 19,090.11 and 8,826.56 is: 13,247.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.42 : 19,090.11 = 8,826.56 : x
  2. Step 2: Convert to fraction form
    12,719.42/19,090.11 = 8,826.56/x
  3. Step 3: Cross multiply
    12,719.42x = 19,090.11 × 8,826.56
  4. Step 4: Simplify right side
    12,719.42x = 168,500,001.32
  5. Step 5: Solve for x
    x = 168,500,001.32/12,719.42
  6. Step 6: Final answer
    x = 13,247.46

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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.