Home / 21,327.84-29,438.58-12,377.34

Finding the Fourth Proportional to 21,327.84, 29,438.58 and 12,377.34

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Solution

The fourth proportional to 21,327.84, 29,438.58 and 12,377.34 is: 17,084.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.84 : 29,438.58 = 12,377.34 : x
  2. Step 2: Convert to fraction form
    21,327.84/29,438.58 = 12,377.34/x
  3. Step 3: Cross multiply
    21,327.84x = 29,438.58 × 12,377.34
  4. Step 4: Simplify right side
    21,327.84x = 364,371,313.78
  5. Step 5: Solve for x
    x = 364,371,313.78/21,327.84
  6. Step 6: Final answer
    x = 17,084.30

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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.