Home / 20,280.71-30,403.43-9,745.45

Finding the Fourth Proportional to 20,280.71, 30,403.43 and 9,745.45

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Solution

The fourth proportional to 20,280.71, 30,403.43 and 9,745.45 is: 14,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.71 : 30,403.43 = 9,745.45 : x
  2. Step 2: Convert to fraction form
    20,280.71/30,403.43 = 9,745.45/x
  3. Step 3: Cross multiply
    20,280.71x = 30,403.43 × 9,745.45
  4. Step 4: Simplify right side
    20,280.71x = 296,295,106.89
  5. Step 5: Solve for x
    x = 296,295,106.89/20,280.71
  6. Step 6: Final answer
    x = 14,609.70

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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.