Home / 21,282.03-29,360.70-13,318.92

Finding the Fourth Proportional to 21,282.03, 29,360.70 and 13,318.92

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Solution

The fourth proportional to 21,282.03, 29,360.70 and 13,318.92 is: 18,374.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.03 : 29,360.70 = 13,318.92 : x
  2. Step 2: Convert to fraction form
    21,282.03/29,360.70 = 13,318.92/x
  3. Step 3: Cross multiply
    21,282.03x = 29,360.70 × 13,318.92
  4. Step 4: Simplify right side
    21,282.03x = 391,052,814.44
  5. Step 5: Solve for x
    x = 391,052,814.44/21,282.03
  6. Step 6: Final answer
    x = 18,374.79

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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.