Home / 13,543.62-18,648.64-11,855.58

Finding the Fourth Proportional to 13,543.62, 18,648.64 and 11,855.58

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Solution

The fourth proportional to 13,543.62, 18,648.64 and 11,855.58 is: 16,324.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.62 : 18,648.64 = 11,855.58 : x
  2. Step 2: Convert to fraction form
    13,543.62/18,648.64 = 11,855.58/x
  3. Step 3: Cross multiply
    13,543.62x = 18,648.64 × 11,855.58
  4. Step 4: Simplify right side
    13,543.62x = 221,090,443.41
  5. Step 5: Solve for x
    x = 221,090,443.41/13,543.62
  6. Step 6: Final answer
    x = 16,324.32

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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.