Home / 15,865.34-21,894.33-8,791.92

Finding the Fourth Proportional to 15,865.34, 21,894.33 and 8,791.92

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Solution

The fourth proportional to 15,865.34, 21,894.33 and 8,791.92 is: 12,132.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,865.34 : 21,894.33 = 8,791.92 : x
  2. Step 2: Convert to fraction form
    15,865.34/21,894.33 = 8,791.92/x
  3. Step 3: Cross multiply
    15,865.34x = 21,894.33 × 8,791.92
  4. Step 4: Simplify right side
    15,865.34x = 192,493,197.81
  5. Step 5: Solve for x
    x = 192,493,197.81/15,865.34
  6. Step 6: Final answer
    x = 12,132.94

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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.