Home / 13,530.40-20,295.60-3,670.90

Finding the Fourth Proportional to 13,530.40, 20,295.60 and 3,670.90

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Solution

The fourth proportional to 13,530.40, 20,295.60 and 3,670.90 is: 5,506.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.40 : 20,295.60 = 3,670.90 : x
  2. Step 2: Convert to fraction form
    13,530.40/20,295.60 = 3,670.90/x
  3. Step 3: Cross multiply
    13,530.40x = 20,295.60 × 3,670.90
  4. Step 4: Simplify right side
    13,530.40x = 74,503,118.04
  5. Step 5: Solve for x
    x = 74,503,118.04/13,530.40
  6. Step 6: Final answer
    x = 5,506.35

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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.