Home / 10,938.20-16,410-3,147.62

Finding the Fourth Proportional to 10,938.20, 16,410 and 3,147.62

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Solution

The fourth proportional to 10,938.20, 16,410 and 3,147.62 is: 4,722.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.20 : 16,410 = 3,147.62 : x
  2. Step 2: Convert to fraction form
    10,938.20/16,410 = 3,147.62/x
  3. Step 3: Cross multiply
    10,938.20x = 16,410 × 3,147.62
  4. Step 4: Simplify right side
    10,938.20x = 51,652,444.20
  5. Step 5: Solve for x
    x = 51,652,444.20/10,938.20
  6. Step 6: Final answer
    x = 4,722.21

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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.