Home / 13,793.78-20,688.70-4,432.57

Finding the Fourth Proportional to 13,793.78, 20,688.70 and 4,432.57

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Solution

The fourth proportional to 13,793.78, 20,688.70 and 4,432.57 is: 6,648.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,793.78 : 20,688.70 = 4,432.57 : x
  2. Step 2: Convert to fraction form
    13,793.78/20,688.70 = 4,432.57/x
  3. Step 3: Cross multiply
    13,793.78x = 20,688.70 × 4,432.57
  4. Step 4: Simplify right side
    13,793.78x = 91,704,032.57
  5. Step 5: Solve for x
    x = 91,704,032.57/13,793.78
  6. Step 6: Final answer
    x = 6,648.22

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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.