Home / 21,283.77-29,371.44-12,331.08

Finding the Fourth Proportional to 21,283.77, 29,371.44 and 12,331.08

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Solution

The fourth proportional to 21,283.77, 29,371.44 and 12,331.08 is: 17,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.77 : 29,371.44 = 12,331.08 : x
  2. Step 2: Convert to fraction form
    21,283.77/29,371.44 = 12,331.08/x
  3. Step 3: Cross multiply
    21,283.77x = 29,371.44 × 12,331.08
  4. Step 4: Simplify right side
    21,283.77x = 362,181,576.36
  5. Step 5: Solve for x
    x = 362,181,576.36/21,283.77
  6. Step 6: Final answer
    x = 17,016.80

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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.