Home / 13,691.30-18,897.09-11,449.28

Finding the Fourth Proportional to 13,691.30, 18,897.09 and 11,449.28

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Solution

The fourth proportional to 13,691.30, 18,897.09 and 11,449.28 is: 15,802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.30 : 18,897.09 = 11,449.28 : x
  2. Step 2: Convert to fraction form
    13,691.30/18,897.09 = 11,449.28/x
  3. Step 3: Cross multiply
    13,691.30x = 18,897.09 × 11,449.28
  4. Step 4: Simplify right side
    13,691.30x = 216,358,074.60
  5. Step 5: Solve for x
    x = 216,358,074.60/13,691.30
  6. Step 6: Final answer
    x = 15,802.60

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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.