Home / 19,664.21-27,135.77-10,711.78

Finding the Fourth Proportional to 19,664.21, 27,135.77 and 10,711.78

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Solution

The fourth proportional to 19,664.21, 27,135.77 and 10,711.78 is: 14,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.21 : 27,135.77 = 10,711.78 : x
  2. Step 2: Convert to fraction form
    19,664.21/27,135.77 = 10,711.78/x
  3. Step 3: Cross multiply
    19,664.21x = 27,135.77 × 10,711.78
  4. Step 4: Simplify right side
    19,664.21x = 290,672,398.37
  5. Step 5: Solve for x
    x = 290,672,398.37/19,664.21
  6. Step 6: Final answer
    x = 14,781.80

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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.