Home / 21,431.22-29,573.95-11,870.84

Finding the Fourth Proportional to 21,431.22, 29,573.95 and 11,870.84

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Solution

The fourth proportional to 21,431.22, 29,573.95 and 11,870.84 is: 16,381.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.22 : 29,573.95 = 11,870.84 : x
  2. Step 2: Convert to fraction form
    21,431.22/29,573.95 = 11,870.84/x
  3. Step 3: Cross multiply
    21,431.22x = 29,573.95 × 11,870.84
  4. Step 4: Simplify right side
    21,431.22x = 351,067,628.62
  5. Step 5: Solve for x
    x = 351,067,628.62/21,431.22
  6. Step 6: Final answer
    x = 16,381.13

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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.