Home / 19,398.42-29,072.79-12,375.72

Finding the Fourth Proportional to 19,398.42, 29,072.79 and 12,375.72

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Solution

The fourth proportional to 19,398.42, 29,072.79 and 12,375.72 is: 18,547.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,398.42 : 29,072.79 = 12,375.72 : x
  2. Step 2: Convert to fraction form
    19,398.42/29,072.79 = 12,375.72/x
  3. Step 3: Cross multiply
    19,398.42x = 29,072.79 × 12,375.72
  4. Step 4: Simplify right side
    19,398.42x = 359,796,708.66
  5. Step 5: Solve for x
    x = 359,796,708.66/19,398.42
  6. Step 6: Final answer
    x = 18,547.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.