Home / 13,424.32-18,525.54-8,119.12

Finding the Fourth Proportional to 13,424.32, 18,525.54 and 8,119.12

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Solution

The fourth proportional to 13,424.32, 18,525.54 and 8,119.12 is: 11,204.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.32 : 18,525.54 = 8,119.12 : x
  2. Step 2: Convert to fraction form
    13,424.32/18,525.54 = 8,119.12/x
  3. Step 3: Cross multiply
    13,424.32x = 18,525.54 × 8,119.12
  4. Step 4: Simplify right side
    13,424.32x = 150,411,082.32
  5. Step 5: Solve for x
    x = 150,411,082.32/13,424.32
  6. Step 6: Final answer
    x = 11,204.37

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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.