Home / 12,383.04-18,581.40-5,457.36

Finding the Fourth Proportional to 12,383.04, 18,581.40 and 5,457.36

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Solution

The fourth proportional to 12,383.04, 18,581.40 and 5,457.36 is: 8,189.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,383.04 : 18,581.40 = 5,457.36 : x
  2. Step 2: Convert to fraction form
    12,383.04/18,581.40 = 5,457.36/x
  3. Step 3: Cross multiply
    12,383.04x = 18,581.40 × 5,457.36
  4. Step 4: Simplify right side
    12,383.04x = 101,405,389.10
  5. Step 5: Solve for x
    x = 101,405,389.10/12,383.04
  6. Step 6: Final answer
    x = 8,189.05

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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.