Home / 21,106.97-29,111.39-14,731.52

Finding the Fourth Proportional to 21,106.97, 29,111.39 and 14,731.52

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Solution

The fourth proportional to 21,106.97, 29,111.39 and 14,731.52 is: 20,318.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.97 : 29,111.39 = 14,731.52 : x
  2. Step 2: Convert to fraction form
    21,106.97/29,111.39 = 14,731.52/x
  3. Step 3: Cross multiply
    21,106.97x = 29,111.39 × 14,731.52
  4. Step 4: Simplify right side
    21,106.97x = 428,854,804.80
  5. Step 5: Solve for x
    x = 428,854,804.80/21,106.97
  6. Step 6: Final answer
    x = 20,318.17

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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.