Home / 21,270.77-29,349.42-11,837.51

Finding the Fourth Proportional to 21,270.77, 29,349.42 and 11,837.51

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Solution

The fourth proportional to 21,270.77, 29,349.42 and 11,837.51 is: 16,333.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.77 : 29,349.42 = 11,837.51 : x
  2. Step 2: Convert to fraction form
    21,270.77/29,349.42 = 11,837.51/x
  3. Step 3: Cross multiply
    21,270.77x = 29,349.42 × 11,837.51
  4. Step 4: Simplify right side
    21,270.77x = 347,423,906.00
  5. Step 5: Solve for x
    x = 347,423,906.00/21,270.77
  6. Step 6: Final answer
    x = 16,333.40

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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.