Home / 20,655.50-30,975.33-6,612.53

Finding the Fourth Proportional to 20,655.50, 30,975.33 and 6,612.53

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Solution

The fourth proportional to 20,655.50, 30,975.33 and 6,612.53 is: 9,916.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.50 : 30,975.33 = 6,612.53 : x
  2. Step 2: Convert to fraction form
    20,655.50/30,975.33 = 6,612.53/x
  3. Step 3: Cross multiply
    20,655.50x = 30,975.33 × 6,612.53
  4. Step 4: Simplify right side
    20,655.50x = 204,825,144.01
  5. Step 5: Solve for x
    x = 204,825,144.01/20,655.50
  6. Step 6: Final answer
    x = 9,916.25

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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.