Home / 19,680.78-29,513.34-7,197.96

Finding the Fourth Proportional to 19,680.78, 29,513.34 and 7,197.96

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Solution

The fourth proportional to 19,680.78, 29,513.34 and 7,197.96 is: 10,794.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.78 : 29,513.34 = 7,197.96 : x
  2. Step 2: Convert to fraction form
    19,680.78/29,513.34 = 7,197.96/x
  3. Step 3: Cross multiply
    19,680.78x = 29,513.34 × 7,197.96
  4. Step 4: Simplify right side
    19,680.78x = 212,435,840.79
  5. Step 5: Solve for x
    x = 212,435,840.79/19,680.78
  6. Step 6: Final answer
    x = 10,794.08

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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.