Home / 20,621.10-30,926.70-5,831.40

Finding the Fourth Proportional to 20,621.10, 30,926.70 and 5,831.40

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Solution

The fourth proportional to 20,621.10, 30,926.70 and 5,831.40 is: 8,745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.10 : 30,926.70 = 5,831.40 : x
  2. Step 2: Convert to fraction form
    20,621.10/30,926.70 = 5,831.40/x
  3. Step 3: Cross multiply
    20,621.10x = 30,926.70 × 5,831.40
  4. Step 4: Simplify right side
    20,621.10x = 180,345,958.38
  5. Step 5: Solve for x
    x = 180,345,958.38/20,621.10
  6. Step 6: Final answer
    x = 8,745.70

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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.