Home / 21,402.12-29,507.94-13,835.64

Finding the Fourth Proportional to 21,402.12, 29,507.94 and 13,835.64

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Solution

The fourth proportional to 21,402.12, 29,507.94 and 13,835.64 is: 19,075.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.12 : 29,507.94 = 13,835.64 : x
  2. Step 2: Convert to fraction form
    21,402.12/29,507.94 = 13,835.64/x
  3. Step 3: Cross multiply
    21,402.12x = 29,507.94 × 13,835.64
  4. Step 4: Simplify right side
    21,402.12x = 408,261,234.98
  5. Step 5: Solve for x
    x = 408,261,234.98/21,402.12
  6. Step 6: Final answer
    x = 19,075.74

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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.