Home / 15,381.39-21,227.64-8,668.35

Finding the Fourth Proportional to 15,381.39, 21,227.64 and 8,668.35

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Solution

The fourth proportional to 15,381.39, 21,227.64 and 8,668.35 is: 11,963.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.39 : 21,227.64 = 8,668.35 : x
  2. Step 2: Convert to fraction form
    15,381.39/21,227.64 = 8,668.35/x
  3. Step 3: Cross multiply
    15,381.39x = 21,227.64 × 8,668.35
  4. Step 4: Simplify right side
    15,381.39x = 184,008,613.19
  5. Step 5: Solve for x
    x = 184,008,613.19/15,381.39
  6. Step 6: Final answer
    x = 11,963.07

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Double scale
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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.