Home / 19,619.91-27,068.85-11,121.12

Finding the Fourth Proportional to 19,619.91, 27,068.85 and 11,121.12

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Solution

The fourth proportional to 19,619.91, 27,068.85 and 11,121.12 is: 15,343.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.91 : 27,068.85 = 11,121.12 : x
  2. Step 2: Convert to fraction form
    19,619.91/27,068.85 = 11,121.12/x
  3. Step 3: Cross multiply
    19,619.91x = 27,068.85 × 11,121.12
  4. Step 4: Simplify right side
    19,619.91x = 301,035,929.11
  5. Step 5: Solve for x
    x = 301,035,929.11/19,619.91
  6. Step 6: Final answer
    x = 15,343.39

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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.