Home / 20,544.40-30,784.20-15,295.60

Finding the Fourth Proportional to 20,544.40, 30,784.20 and 15,295.60

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Solution

The fourth proportional to 20,544.40, 30,784.20 and 15,295.60 is: 22,919.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,544.40 : 30,784.20 = 15,295.60 : x
  2. Step 2: Convert to fraction form
    20,544.40/30,784.20 = 15,295.60/x
  3. Step 3: Cross multiply
    20,544.40x = 30,784.20 × 15,295.60
  4. Step 4: Simplify right side
    20,544.40x = 470,862,809.52
  5. Step 5: Solve for x
    x = 470,862,809.52/20,544.40
  6. Step 6: Final answer
    x = 22,919.28

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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.