Home / 13,181.48-18,188.85-7,875.26

Finding the Fourth Proportional to 13,181.48, 18,188.85 and 7,875.26

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Solution

The fourth proportional to 13,181.48, 18,188.85 and 7,875.26 is: 10,866.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.48 : 18,188.85 = 7,875.26 : x
  2. Step 2: Convert to fraction form
    13,181.48/18,188.85 = 7,875.26/x
  3. Step 3: Cross multiply
    13,181.48x = 18,188.85 × 7,875.26
  4. Step 4: Simplify right side
    13,181.48x = 143,241,922.85
  5. Step 5: Solve for x
    x = 143,241,922.85/13,181.48
  6. Step 6: Final answer
    x = 10,866.91

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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.