Home / 21,316.22-29,416.38-11,884.78

Finding the Fourth Proportional to 21,316.22, 29,416.38 and 11,884.78

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Solution

The fourth proportional to 21,316.22, 29,416.38 and 11,884.78 is: 16,401.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.22 : 29,416.38 = 11,884.78 : x
  2. Step 2: Convert to fraction form
    21,316.22/29,416.38 = 11,884.78/x
  3. Step 3: Cross multiply
    21,316.22x = 29,416.38 × 11,884.78
  4. Step 4: Simplify right side
    21,316.22x = 349,607,263.75
  5. Step 5: Solve for x
    x = 349,607,263.75/21,316.22
  6. Step 6: Final answer
    x = 16,401.00

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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.