Home / 20,949.98-31,416.76-7,795.16

Finding the Fourth Proportional to 20,949.98, 31,416.76 and 7,795.16

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Solution

The fourth proportional to 20,949.98, 31,416.76 and 7,795.16 is: 11,689.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.98 : 31,416.76 = 7,795.16 : x
  2. Step 2: Convert to fraction form
    20,949.98/31,416.76 = 7,795.16/x
  3. Step 3: Cross multiply
    20,949.98x = 31,416.76 × 7,795.16
  4. Step 4: Simplify right side
    20,949.98x = 244,898,670.88
  5. Step 5: Solve for x
    x = 244,898,670.88/20,949.98
  6. Step 6: Final answer
    x = 11,689.69

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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.