Home / 21,303.05-31,954.77-5,720.67

Finding the Fourth Proportional to 21,303.05, 31,954.77 and 5,720.67

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Solution

The fourth proportional to 21,303.05, 31,954.77 and 5,720.67 is: 8,581.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.05 : 31,954.77 = 5,720.67 : x
  2. Step 2: Convert to fraction form
    21,303.05/31,954.77 = 5,720.67/x
  3. Step 3: Cross multiply
    21,303.05x = 31,954.77 × 5,720.67
  4. Step 4: Simplify right side
    21,303.05x = 182,802,694.10
  5. Step 5: Solve for x
    x = 182,802,694.10/21,303.05
  6. Step 6: Final answer
    x = 8,581.06

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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.