Home / 28,919.44-39,914.76-16,989.04

Finding the Fourth Proportional to 28,919.44, 39,914.76 and 16,989.04

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Solution

The fourth proportional to 28,919.44, 39,914.76 and 16,989.04 is: 23,448.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.44 : 39,914.76 = 16,989.04 : x
  2. Step 2: Convert to fraction form
    28,919.44/39,914.76 = 16,989.04/x
  3. Step 3: Cross multiply
    28,919.44x = 39,914.76 × 16,989.04
  4. Step 4: Simplify right side
    28,919.44x = 678,113,454.23
  5. Step 5: Solve for x
    x = 678,113,454.23/28,919.44
  6. Step 6: Final answer
    x = 23,448.36

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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.