Home / 21,589.24-29,792.44-12,158.68

Finding the Fourth Proportional to 21,589.24, 29,792.44 and 12,158.68

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Solution

The fourth proportional to 21,589.24, 29,792.44 and 12,158.68 is: 16,778.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,589.24 : 29,792.44 = 12,158.68 : x
  2. Step 2: Convert to fraction form
    21,589.24/29,792.44 = 12,158.68/x
  3. Step 3: Cross multiply
    21,589.24x = 29,792.44 × 12,158.68
  4. Step 4: Simplify right side
    21,589.24x = 362,236,744.38
  5. Step 5: Solve for x
    x = 362,236,744.38/21,589.24
  6. Step 6: Final answer
    x = 16,778.58

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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.