Home / 13,946.90-20,920.35-9,791.60

Finding the Fourth Proportional to 13,946.90, 20,920.35 and 9,791.60

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Solution

The fourth proportional to 13,946.90, 20,920.35 and 9,791.60 is: 14,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,946.90 : 20,920.35 = 9,791.60 : x
  2. Step 2: Convert to fraction form
    13,946.90/20,920.35 = 9,791.60/x
  3. Step 3: Cross multiply
    13,946.90x = 20,920.35 × 9,791.60
  4. Step 4: Simplify right side
    13,946.90x = 204,843,699.06
  5. Step 5: Solve for x
    x = 204,843,699.06/13,946.90
  6. Step 6: Final answer
    x = 14,687.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.