Home / 13,645.53-20,468.57-4,285.35

Finding the Fourth Proportional to 13,645.53, 20,468.57 and 4,285.35

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Solution

The fourth proportional to 13,645.53, 20,468.57 and 4,285.35 is: 6,428.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.53 : 20,468.57 = 4,285.35 : x
  2. Step 2: Convert to fraction form
    13,645.53/20,468.57 = 4,285.35/x
  3. Step 3: Cross multiply
    13,645.53x = 20,468.57 × 4,285.35
  4. Step 4: Simplify right side
    13,645.53x = 87,714,965.02
  5. Step 5: Solve for x
    x = 87,714,965.02/13,645.53
  6. Step 6: Final answer
    x = 6,428.11

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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.