Home / 21,969.36-30,331.71-14,429.04

Finding the Fourth Proportional to 21,969.36, 30,331.71 and 14,429.04

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Solution

The fourth proportional to 21,969.36, 30,331.71 and 14,429.04 is: 19,921.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.36 : 30,331.71 = 14,429.04 : x
  2. Step 2: Convert to fraction form
    21,969.36/30,331.71 = 14,429.04/x
  3. Step 3: Cross multiply
    21,969.36x = 30,331.71 × 14,429.04
  4. Step 4: Simplify right side
    21,969.36x = 437,657,456.86
  5. Step 5: Solve for x
    x = 437,657,456.86/21,969.36
  6. Step 6: Final answer
    x = 19,921.27

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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.