Home / 15,696.85-21,656.37-8,889.94

Finding the Fourth Proportional to 15,696.85, 21,656.37 and 8,889.94

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Solution

The fourth proportional to 15,696.85, 21,656.37 and 8,889.94 is: 12,265.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.85 : 21,656.37 = 8,889.94 : x
  2. Step 2: Convert to fraction form
    15,696.85/21,656.37 = 8,889.94/x
  3. Step 3: Cross multiply
    15,696.85x = 21,656.37 × 8,889.94
  4. Step 4: Simplify right side
    15,696.85x = 192,523,829.92
  5. Step 5: Solve for x
    x = 192,523,829.92/15,696.85
  6. Step 6: Final answer
    x = 12,265.13

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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.