Home / 13,118.48-18,103.62-7,150.16

Finding the Fourth Proportional to 13,118.48, 18,103.62 and 7,150.16

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Solution

The fourth proportional to 13,118.48, 18,103.62 and 7,150.16 is: 9,867.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.48 : 18,103.62 = 7,150.16 : x
  2. Step 2: Convert to fraction form
    13,118.48/18,103.62 = 7,150.16/x
  3. Step 3: Cross multiply
    13,118.48x = 18,103.62 × 7,150.16
  4. Step 4: Simplify right side
    13,118.48x = 129,443,779.58
  5. Step 5: Solve for x
    x = 129,443,779.58/13,118.48
  6. Step 6: Final answer
    x = 9,867.28

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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.