Home / 13,506.40-20,259.60-8,840.80

Finding the Fourth Proportional to 13,506.40, 20,259.60 and 8,840.80

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Solution

The fourth proportional to 13,506.40, 20,259.60 and 8,840.80 is: 13,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,506.40 : 20,259.60 = 8,840.80 : x
  2. Step 2: Convert to fraction form
    13,506.40/20,259.60 = 8,840.80/x
  3. Step 3: Cross multiply
    13,506.40x = 20,259.60 × 8,840.80
  4. Step 4: Simplify right side
    13,506.40x = 179,111,071.68
  5. Step 5: Solve for x
    x = 179,111,071.68/13,506.40
  6. Step 6: Final answer
    x = 13,261.20

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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.