Home / 18,788.40-28,185.84-6,309.63

Finding the Fourth Proportional to 18,788.40, 28,185.84 and 6,309.63

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Solution

The fourth proportional to 18,788.40, 28,185.84 and 6,309.63 is: 9,465.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.40 : 28,185.84 = 6,309.63 : x
  2. Step 2: Convert to fraction form
    18,788.40/28,185.84 = 6,309.63/x
  3. Step 3: Cross multiply
    18,788.40x = 28,185.84 × 6,309.63
  4. Step 4: Simplify right side
    18,788.40x = 177,842,221.64
  5. Step 5: Solve for x
    x = 177,842,221.64/18,788.40
  6. Step 6: Final answer
    x = 9,465.53

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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.