Home / 21,316.27-29,416.49-11,884.63

Finding the Fourth Proportional to 21,316.27, 29,416.49 and 11,884.63

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Solution

The fourth proportional to 21,316.27, 29,416.49 and 11,884.63 is: 16,400.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.27 : 29,416.49 = 11,884.63 : x
  2. Step 2: Convert to fraction form
    21,316.27/29,416.49 = 11,884.63/x
  3. Step 3: Cross multiply
    21,316.27x = 29,416.49 × 11,884.63
  4. Step 4: Simplify right side
    21,316.27x = 349,604,099.55
  5. Step 5: Solve for x
    x = 349,604,099.55/21,316.27
  6. Step 6: Final answer
    x = 16,400.81

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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.