Home / 13,745.40-20,618.10-9,808.80

Finding the Fourth Proportional to 13,745.40, 20,618.10 and 9,808.80

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Solution

The fourth proportional to 13,745.40, 20,618.10 and 9,808.80 is: 14,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.40 : 20,618.10 = 9,808.80 : x
  2. Step 2: Convert to fraction form
    13,745.40/20,618.10 = 9,808.80/x
  3. Step 3: Cross multiply
    13,745.40x = 20,618.10 × 9,808.80
  4. Step 4: Simplify right side
    13,745.40x = 202,238,819.28
  5. Step 5: Solve for x
    x = 202,238,819.28/13,745.40
  6. Step 6: Final answer
    x = 14,713.20

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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.