Home / 13,319.40-19,991.37-6,750.18

Finding the Fourth Proportional to 13,319.40, 19,991.37 and 6,750.18

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Solution

The fourth proportional to 13,319.40, 19,991.37 and 6,750.18 is: 10,131.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.40 : 19,991.37 = 6,750.18 : x
  2. Step 2: Convert to fraction form
    13,319.40/19,991.37 = 6,750.18/x
  3. Step 3: Cross multiply
    13,319.40x = 19,991.37 × 6,750.18
  4. Step 4: Simplify right side
    13,319.40x = 134,945,345.95
  5. Step 5: Solve for x
    x = 134,945,345.95/13,319.40
  6. Step 6: Final answer
    x = 10,131.49

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1.5x scale

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.