Home / 20,794.78-31,208.54-9,695.76

Finding the Fourth Proportional to 20,794.78, 31,208.54 and 9,695.76

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Solution

The fourth proportional to 20,794.78, 31,208.54 and 9,695.76 is: 14,551.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.78 : 31,208.54 = 9,695.76 : x
  2. Step 2: Convert to fraction form
    20,794.78/31,208.54 = 9,695.76/x
  3. Step 3: Cross multiply
    20,794.78x = 31,208.54 × 9,695.76
  4. Step 4: Simplify right side
    20,794.78x = 302,590,513.79
  5. Step 5: Solve for x
    x = 302,590,513.79/20,794.78
  6. Step 6: Final answer
    x = 14,551.27

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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.