Home / 13,485.84-20,269.13-11,160.78

Finding the Fourth Proportional to 13,485.84, 20,269.13 and 11,160.78

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Solution

The fourth proportional to 13,485.84, 20,269.13 and 11,160.78 is: 16,774.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.84 : 20,269.13 = 11,160.78 : x
  2. Step 2: Convert to fraction form
    13,485.84/20,269.13 = 11,160.78/x
  3. Step 3: Cross multiply
    13,485.84x = 20,269.13 × 11,160.78
  4. Step 4: Simplify right side
    13,485.84x = 226,219,244.92
  5. Step 5: Solve for x
    x = 226,219,244.92/13,485.84
  6. Step 6: Final answer
    x = 16,774.58

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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.