Home / 21,326.34-29,436.51-12,375.84

Finding the Fourth Proportional to 21,326.34, 29,436.51 and 12,375.84

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Solution

The fourth proportional to 21,326.34, 29,436.51 and 12,375.84 is: 17,082.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.34 : 29,436.51 = 12,375.84 : x
  2. Step 2: Convert to fraction form
    21,326.34/29,436.51 = 12,375.84/x
  3. Step 3: Cross multiply
    21,326.34x = 29,436.51 × 12,375.84
  4. Step 4: Simplify right side
    21,326.34x = 364,301,537.92
  5. Step 5: Solve for x
    x = 364,301,537.92/21,326.34
  6. Step 6: Final answer
    x = 17,082.23

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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.