Home / 21,261.96-31,895.88-9,414.80

Finding the Fourth Proportional to 21,261.96, 31,895.88 and 9,414.80

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Solution

The fourth proportional to 21,261.96, 31,895.88 and 9,414.80 is: 14,123.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.96 : 31,895.88 = 9,414.80 : x
  2. Step 2: Convert to fraction form
    21,261.96/31,895.88 = 9,414.80/x
  3. Step 3: Cross multiply
    21,261.96x = 31,895.88 × 9,414.80
  4. Step 4: Simplify right side
    21,261.96x = 300,293,331.02
  5. Step 5: Solve for x
    x = 300,293,331.02/21,261.96
  6. Step 6: Final answer
    x = 14,123.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.