Home / 13,840.36-20,760.90-4,480.72

Finding the Fourth Proportional to 13,840.36, 20,760.90 and 4,480.72

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Solution

The fourth proportional to 13,840.36, 20,760.90 and 4,480.72 is: 6,721.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,840.36 : 20,760.90 = 4,480.72 : x
  2. Step 2: Convert to fraction form
    13,840.36/20,760.90 = 4,480.72/x
  3. Step 3: Cross multiply
    13,840.36x = 20,760.90 × 4,480.72
  4. Step 4: Simplify right side
    13,840.36x = 93,023,779.85
  5. Step 5: Solve for x
    x = 93,023,779.85/13,840.36
  6. Step 6: Final answer
    x = 6,721.20

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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.