Home / 19,668.66-27,143.40-11,171.16

Finding the Fourth Proportional to 19,668.66, 27,143.40 and 11,171.16

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Solution

The fourth proportional to 19,668.66, 27,143.40 and 11,171.16 is: 15,416.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,668.66 : 27,143.40 = 11,171.16 : x
  2. Step 2: Convert to fraction form
    19,668.66/27,143.40 = 11,171.16/x
  3. Step 3: Cross multiply
    19,668.66x = 27,143.40 × 11,171.16
  4. Step 4: Simplify right side
    19,668.66x = 303,223,264.34
  5. Step 5: Solve for x
    x = 303,223,264.34/19,668.66
  6. Step 6: Final answer
    x = 15,416.57

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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.