Home / 21,170.23-31,755.36-5,376.45

Finding the Fourth Proportional to 21,170.23, 31,755.36 and 5,376.45

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Solution

The fourth proportional to 21,170.23, 31,755.36 and 5,376.45 is: 8,064.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.23 : 31,755.36 = 5,376.45 : x
  2. Step 2: Convert to fraction form
    21,170.23/31,755.36 = 5,376.45/x
  3. Step 3: Cross multiply
    21,170.23x = 31,755.36 × 5,376.45
  4. Step 4: Simplify right side
    21,170.23x = 170,731,013.68
  5. Step 5: Solve for x
    x = 170,731,013.68/21,170.23
  6. Step 6: Final answer
    x = 8,064.67

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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.