Home / 21,176.57-31,764.54-5,166.17

Finding the Fourth Proportional to 21,176.57, 31,764.54 and 5,166.17

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Solution

The fourth proportional to 21,176.57, 31,764.54 and 5,166.17 is: 7,749.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.57 : 31,764.54 = 5,166.17 : x
  2. Step 2: Convert to fraction form
    21,176.57/31,764.54 = 5,166.17/x
  3. Step 3: Cross multiply
    21,176.57x = 31,764.54 × 5,166.17
  4. Step 4: Simplify right side
    21,176.57x = 164,100,854.79
  5. Step 5: Solve for x
    x = 164,100,854.79/21,176.57
  6. Step 6: Final answer
    x = 7,749.17

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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.