Home / 13,808.90-20,702.01-5,485.34

Finding the Fourth Proportional to 13,808.90, 20,702.01 and 5,485.34

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Solution

The fourth proportional to 13,808.90, 20,702.01 and 5,485.34 is: 8,223.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.90 : 20,702.01 = 5,485.34 : x
  2. Step 2: Convert to fraction form
    13,808.90/20,702.01 = 5,485.34/x
  3. Step 3: Cross multiply
    13,808.90x = 20,702.01 × 5,485.34
  4. Step 4: Simplify right side
    13,808.90x = 113,557,563.53
  5. Step 5: Solve for x
    x = 113,557,563.53/13,808.90
  6. Step 6: Final answer
    x = 8,223.51

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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.