Home / 13,379.36-18,461.44-8,001.12

Finding the Fourth Proportional to 13,379.36, 18,461.44 and 8,001.12

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Solution

The fourth proportional to 13,379.36, 18,461.44 and 8,001.12 is: 11,040.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.36 : 18,461.44 = 8,001.12 : x
  2. Step 2: Convert to fraction form
    13,379.36/18,461.44 = 8,001.12/x
  3. Step 3: Cross multiply
    13,379.36x = 18,461.44 × 8,001.12
  4. Step 4: Simplify right side
    13,379.36x = 147,712,196.81
  5. Step 5: Solve for x
    x = 147,712,196.81/13,379.36
  6. Step 6: Final answer
    x = 11,040.30

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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.