Home / 20,365.84-28,106.67-11,867.50

Finding the Fourth Proportional to 20,365.84, 28,106.67 and 11,867.50

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Solution

The fourth proportional to 20,365.84, 28,106.67 and 11,867.50 is: 16,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.84 : 28,106.67 = 11,867.50 : x
  2. Step 2: Convert to fraction form
    20,365.84/28,106.67 = 11,867.50/x
  3. Step 3: Cross multiply
    20,365.84x = 28,106.67 × 11,867.50
  4. Step 4: Simplify right side
    20,365.84x = 333,555,906.23
  5. Step 5: Solve for x
    x = 333,555,906.23/20,365.84
  6. Step 6: Final answer
    x = 16,378.21

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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.