Home / 13,526.40-20,289.60-8,860.80

Finding the Fourth Proportional to 13,526.40, 20,289.60 and 8,860.80

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Solution

The fourth proportional to 13,526.40, 20,289.60 and 8,860.80 is: 13,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,526.40 : 20,289.60 = 8,860.80 : x
  2. Step 2: Convert to fraction form
    13,526.40/20,289.60 = 8,860.80/x
  3. Step 3: Cross multiply
    13,526.40x = 20,289.60 × 8,860.80
  4. Step 4: Simplify right side
    13,526.40x = 179,782,087.68
  5. Step 5: Solve for x
    x = 179,782,087.68/13,526.40
  6. Step 6: Final answer
    x = 13,291.20

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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.