Home / 13,823.28-20,734.92-3,435

Finding the Fourth Proportional to 13,823.28, 20,734.92 and 3,435

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Solution

The fourth proportional to 13,823.28, 20,734.92 and 3,435 is: 5,152.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,823.28 : 20,734.92 = 3,435 : x
  2. Step 2: Convert to fraction form
    13,823.28/20,734.92 = 3,435/x
  3. Step 3: Cross multiply
    13,823.28x = 20,734.92 × 3,435
  4. Step 4: Simplify right side
    13,823.28x = 71,224,450.20
  5. Step 5: Solve for x
    x = 71,224,450.20/13,823.28
  6. Step 6: Final answer
    x = 5,152.50

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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.