Home / 20,830.30-28,735.08-14,113.64

Finding the Fourth Proportional to 20,830.30, 28,735.08 and 14,113.64

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Solution

The fourth proportional to 20,830.30, 28,735.08 and 14,113.64 is: 19,469.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.30 : 28,735.08 = 14,113.64 : x
  2. Step 2: Convert to fraction form
    20,830.30/28,735.08 = 14,113.64/x
  3. Step 3: Cross multiply
    20,830.30x = 28,735.08 × 14,113.64
  4. Step 4: Simplify right side
    20,830.30x = 405,556,574.49
  5. Step 5: Solve for x
    x = 405,556,574.49/20,830.30
  6. Step 6: Final answer
    x = 19,469.55

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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.