Home / 13,499.80-20,271.30-9,136.60

Finding the Fourth Proportional to 13,499.80, 20,271.30 and 9,136.60

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Solution

The fourth proportional to 13,499.80, 20,271.30 and 9,136.60 is: 13,719.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,499.80 : 20,271.30 = 9,136.60 : x
  2. Step 2: Convert to fraction form
    13,499.80/20,271.30 = 9,136.60/x
  3. Step 3: Cross multiply
    13,499.80x = 20,271.30 × 9,136.60
  4. Step 4: Simplify right side
    13,499.80x = 185,210,759.58
  5. Step 5: Solve for x
    x = 185,210,759.58/13,499.80
  6. Step 6: Final answer
    x = 13,719.52

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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.