Home / 20,528.60-30,805.05-13,528.85

Finding the Fourth Proportional to 20,528.60, 30,805.05 and 13,528.85

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Solution

The fourth proportional to 20,528.60, 30,805.05 and 13,528.85 is: 20,301.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.60 : 30,805.05 = 13,528.85 : x
  2. Step 2: Convert to fraction form
    20,528.60/30,805.05 = 13,528.85/x
  3. Step 3: Cross multiply
    20,528.60x = 30,805.05 × 13,528.85
  4. Step 4: Simplify right side
    20,528.60x = 416,756,900.69
  5. Step 5: Solve for x
    x = 416,756,900.69/20,528.60
  6. Step 6: Final answer
    x = 20,301.28

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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.