Home / 15,730.24-21,706.32-8,656.96

Finding the Fourth Proportional to 15,730.24, 21,706.32 and 8,656.96

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Solution

The fourth proportional to 15,730.24, 21,706.32 and 8,656.96 is: 11,945.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.24 : 21,706.32 = 8,656.96 : x
  2. Step 2: Convert to fraction form
    15,730.24/21,706.32 = 8,656.96/x
  3. Step 3: Cross multiply
    15,730.24x = 21,706.32 × 8,656.96
  4. Step 4: Simplify right side
    15,730.24x = 187,910,743.99
  5. Step 5: Solve for x
    x = 187,910,743.99/15,730.24
  6. Step 6: Final answer
    x = 11,945.83

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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.