Home / 21,431.16-29,573.44-11,870.08

Finding the Fourth Proportional to 21,431.16, 29,573.44 and 11,870.08

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Solution

The fourth proportional to 21,431.16, 29,573.44 and 11,870.08 is: 16,379.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.16 : 29,573.44 = 11,870.08 : x
  2. Step 2: Convert to fraction form
    21,431.16/29,573.44 = 11,870.08/x
  3. Step 3: Cross multiply
    21,431.16x = 29,573.44 × 11,870.08
  4. Step 4: Simplify right side
    21,431.16x = 351,039,098.68
  5. Step 5: Solve for x
    x = 351,039,098.68/21,431.16
  6. Step 6: Final answer
    x = 16,379.85

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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.