Home / 13,380.02-18,446.93-11,511.68

Finding the Fourth Proportional to 13,380.02, 18,446.93 and 11,511.68

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Solution

The fourth proportional to 13,380.02, 18,446.93 and 11,511.68 is: 15,871.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.02 : 18,446.93 = 11,511.68 : x
  2. Step 2: Convert to fraction form
    13,380.02/18,446.93 = 11,511.68/x
  3. Step 3: Cross multiply
    13,380.02x = 18,446.93 × 11,511.68
  4. Step 4: Simplify right side
    13,380.02x = 212,355,082.55
  5. Step 5: Solve for x
    x = 212,355,082.55/13,380.02
  6. Step 6: Final answer
    x = 15,871.05

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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.