Home / 28,804.96-39,756-16,867.60

Finding the Fourth Proportional to 28,804.96, 39,756 and 16,867.60

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Solution

The fourth proportional to 28,804.96, 39,756 and 16,867.60 is: 23,280.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,804.96 : 39,756 = 16,867.60 : x
  2. Step 2: Convert to fraction form
    28,804.96/39,756 = 16,867.60/x
  3. Step 3: Cross multiply
    28,804.96x = 39,756 × 16,867.60
  4. Step 4: Simplify right side
    28,804.96x = 670,588,305.60
  5. Step 5: Solve for x
    x = 670,588,305.60/28,804.96
  6. Step 6: Final answer
    x = 23,280.31

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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.