Home / 21,512.97-29,671.43-18,855.77

Finding the Fourth Proportional to 21,512.97, 29,671.43 and 18,855.77

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Solution

The fourth proportional to 21,512.97, 29,671.43 and 18,855.77 is: 26,006.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.97 : 29,671.43 = 18,855.77 : x
  2. Step 2: Convert to fraction form
    21,512.97/29,671.43 = 18,855.77/x
  3. Step 3: Cross multiply
    21,512.97x = 29,671.43 × 18,855.77
  4. Step 4: Simplify right side
    21,512.97x = 559,477,417.02
  5. Step 5: Solve for x
    x = 559,477,417.02/21,512.97
  6. Step 6: Final answer
    x = 26,006.52

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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.