Home / 21,235.56-29,305.22-13,282.30

Finding the Fourth Proportional to 21,235.56, 29,305.22 and 13,282.30

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Solution

The fourth proportional to 21,235.56, 29,305.22 and 13,282.30 is: 18,329.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.56 : 29,305.22 = 13,282.30 : x
  2. Step 2: Convert to fraction form
    21,235.56/29,305.22 = 13,282.30/x
  3. Step 3: Cross multiply
    21,235.56x = 29,305.22 × 13,282.30
  4. Step 4: Simplify right side
    21,235.56x = 389,240,723.61
  5. Step 5: Solve for x
    x = 389,240,723.61/21,235.56
  6. Step 6: Final answer
    x = 18,329.67

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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.