Home / 21,235.40-29,305.18-11,675.70

Finding the Fourth Proportional to 21,235.40, 29,305.18 and 11,675.70

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Solution

The fourth proportional to 21,235.40, 29,305.18 and 11,675.70 is: 16,112.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.40 : 29,305.18 = 11,675.70 : x
  2. Step 2: Convert to fraction form
    21,235.40/29,305.18 = 11,675.70/x
  3. Step 3: Cross multiply
    21,235.40x = 29,305.18 × 11,675.70
  4. Step 4: Simplify right side
    21,235.40x = 342,158,439.04
  5. Step 5: Solve for x
    x = 342,158,439.04/21,235.40
  6. Step 6: Final answer
    x = 16,112.64

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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.