Home / 20,735.04-28,614.90-12,782.52

Finding the Fourth Proportional to 20,735.04, 28,614.90 and 12,782.52

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Solution

The fourth proportional to 20,735.04, 28,614.90 and 12,782.52 is: 17,640.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.04 : 28,614.90 = 12,782.52 : x
  2. Step 2: Convert to fraction form
    20,735.04/28,614.90 = 12,782.52/x
  3. Step 3: Cross multiply
    20,735.04x = 28,614.90 × 12,782.52
  4. Step 4: Simplify right side
    20,735.04x = 365,770,531.55
  5. Step 5: Solve for x
    x = 365,770,531.55/20,735.04
  6. Step 6: Final answer
    x = 17,640.21

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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.