Home / 13,768.08-18,987.72-11,653.44

Finding the Fourth Proportional to 13,768.08, 18,987.72 and 11,653.44

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Solution

The fourth proportional to 13,768.08, 18,987.72 and 11,653.44 is: 16,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.08 : 18,987.72 = 11,653.44 : x
  2. Step 2: Convert to fraction form
    13,768.08/18,987.72 = 11,653.44/x
  3. Step 3: Cross multiply
    13,768.08x = 18,987.72 × 11,653.44
  4. Step 4: Simplify right side
    13,768.08x = 221,272,255.76
  5. Step 5: Solve for x
    x = 221,272,255.76/13,768.08
  6. Step 6: Final answer
    x = 16,071.40

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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.