Home / 20,504.80-30,757.20-15,547.60

Finding the Fourth Proportional to 20,504.80, 30,757.20 and 15,547.60

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Solution

The fourth proportional to 20,504.80, 30,757.20 and 15,547.60 is: 23,321.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.80 : 30,757.20 = 15,547.60 : x
  2. Step 2: Convert to fraction form
    20,504.80/30,757.20 = 15,547.60/x
  3. Step 3: Cross multiply
    20,504.80x = 30,757.20 × 15,547.60
  4. Step 4: Simplify right side
    20,504.80x = 478,200,642.72
  5. Step 5: Solve for x
    x = 478,200,642.72/20,504.80
  6. Step 6: Final answer
    x = 23,321.40

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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.