Home / 13,544.61-18,690.84-7,879.07

Finding the Fourth Proportional to 13,544.61, 18,690.84 and 7,879.07

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Solution

The fourth proportional to 13,544.61, 18,690.84 and 7,879.07 is: 10,872.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,544.61 : 18,690.84 = 7,879.07 : x
  2. Step 2: Convert to fraction form
    13,544.61/18,690.84 = 7,879.07/x
  3. Step 3: Cross multiply
    13,544.61x = 18,690.84 × 7,879.07
  4. Step 4: Simplify right side
    13,544.61x = 147,266,343.26
  5. Step 5: Solve for x
    x = 147,266,343.26/13,544.61
  6. Step 6: Final answer
    x = 10,872.69

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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.