Home / 21,326.96-29,438.54-12,833.84

Finding the Fourth Proportional to 21,326.96, 29,438.54 and 12,833.84

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Solution

The fourth proportional to 21,326.96, 29,438.54 and 12,833.84 is: 17,715.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.96 : 29,438.54 = 12,833.84 : x
  2. Step 2: Convert to fraction form
    21,326.96/29,438.54 = 12,833.84/x
  3. Step 3: Cross multiply
    21,326.96x = 29,438.54 × 12,833.84
  4. Step 4: Simplify right side
    21,326.96x = 377,809,512.19
  5. Step 5: Solve for x
    x = 377,809,512.19/21,326.96
  6. Step 6: Final answer
    x = 17,715.11

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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.