Home / 13,520.53-18,648.05-11,635.30

Finding the Fourth Proportional to 13,520.53, 18,648.05 and 11,635.30

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Solution

The fourth proportional to 13,520.53, 18,648.05 and 11,635.30 is: 16,047.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.53 : 18,648.05 = 11,635.30 : x
  2. Step 2: Convert to fraction form
    13,520.53/18,648.05 = 11,635.30/x
  3. Step 3: Cross multiply
    13,520.53x = 18,648.05 × 11,635.30
  4. Step 4: Simplify right side
    13,520.53x = 216,975,656.17
  5. Step 5: Solve for x
    x = 216,975,656.17/13,520.53
  6. Step 6: Final answer
    x = 16,047.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.