Home / 18,858.51-28,287.84-6,378.63

Finding the Fourth Proportional to 18,858.51, 28,287.84 and 6,378.63

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Solution

The fourth proportional to 18,858.51, 28,287.84 and 6,378.63 is: 9,567.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858.51 : 28,287.84 = 6,378.63 : x
  2. Step 2: Convert to fraction form
    18,858.51/28,287.84 = 6,378.63/x
  3. Step 3: Cross multiply
    18,858.51x = 28,287.84 × 6,378.63
  4. Step 4: Simplify right side
    18,858.51x = 180,437,664.86
  5. Step 5: Solve for x
    x = 180,437,664.86/18,858.51
  6. Step 6: Final answer
    x = 9,567.97

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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.