Home / 21,175.93-29,219.55-12,099.71

Finding the Fourth Proportional to 21,175.93, 29,219.55 and 12,099.71

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Solution

The fourth proportional to 21,175.93, 29,219.55 and 12,099.71 is: 16,695.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.93 : 29,219.55 = 12,099.71 : x
  2. Step 2: Convert to fraction form
    21,175.93/29,219.55 = 12,099.71/x
  3. Step 3: Cross multiply
    21,175.93x = 29,219.55 × 12,099.71
  4. Step 4: Simplify right side
    21,175.93x = 353,548,177.07
  5. Step 5: Solve for x
    x = 353,548,177.07/21,175.93
  6. Step 6: Final answer
    x = 16,695.76

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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.