Home / 28,918.60-39,898.32-16,984.90

Finding the Fourth Proportional to 28,918.60, 39,898.32 and 16,984.90

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Solution

The fourth proportional to 28,918.60, 39,898.32 and 16,984.90 is: 23,433.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.60 : 39,898.32 = 16,984.90 : x
  2. Step 2: Convert to fraction form
    28,918.60/39,898.32 = 16,984.90/x
  3. Step 3: Cross multiply
    28,918.60x = 39,898.32 × 16,984.90
  4. Step 4: Simplify right side
    28,918.60x = 677,668,975.37
  5. Step 5: Solve for x
    x = 677,668,975.37/28,918.60
  6. Step 6: Final answer
    x = 23,433.67

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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.