Home / 21,359.92-29,475.80-11,928.56

Finding the Fourth Proportional to 21,359.92, 29,475.80 and 11,928.56

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Solution

The fourth proportional to 21,359.92, 29,475.80 and 11,928.56 is: 16,460.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,359.92 : 29,475.80 = 11,928.56 : x
  2. Step 2: Convert to fraction form
    21,359.92/29,475.80 = 11,928.56/x
  3. Step 3: Cross multiply
    21,359.92x = 29,475.80 × 11,928.56
  4. Step 4: Simplify right side
    21,359.92x = 351,603,848.85
  5. Step 5: Solve for x
    x = 351,603,848.85/21,359.92
  6. Step 6: Final answer
    x = 16,460.92

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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.