Home / 21,250.81-29,326.12-11,690.83

Finding the Fourth Proportional to 21,250.81, 29,326.12 and 11,690.83

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Solution

The fourth proportional to 21,250.81, 29,326.12 and 11,690.83 is: 16,133.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.81 : 29,326.12 = 11,690.83 : x
  2. Step 2: Convert to fraction form
    21,250.81/29,326.12 = 11,690.83/x
  3. Step 3: Cross multiply
    21,250.81x = 29,326.12 × 11,690.83
  4. Step 4: Simplify right side
    21,250.81x = 342,846,580.94
  5. Step 5: Solve for x
    x = 342,846,580.94/21,250.81
  6. Step 6: Final answer
    x = 16,133.34

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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.