Home / 20,777.70-28,673.07-11,346.18

Finding the Fourth Proportional to 20,777.70, 28,673.07 and 11,346.18

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Solution

The fourth proportional to 20,777.70, 28,673.07 and 11,346.18 is: 15,657.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.70 : 28,673.07 = 11,346.18 : x
  2. Step 2: Convert to fraction form
    20,777.70/28,673.07 = 11,346.18/x
  3. Step 3: Cross multiply
    20,777.70x = 28,673.07 × 11,346.18
  4. Step 4: Simplify right side
    20,777.70x = 325,329,813.37
  5. Step 5: Solve for x
    x = 325,329,813.37/20,777.70
  6. Step 6: Final answer
    x = 15,657.64

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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.