Home / 20,904.48-31,357.13-5,322.11

Finding the Fourth Proportional to 20,904.48, 31,357.13 and 5,322.11

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Solution

The fourth proportional to 20,904.48, 31,357.13 and 5,322.11 is: 7,983.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.48 : 31,357.13 = 5,322.11 : x
  2. Step 2: Convert to fraction form
    20,904.48/31,357.13 = 5,322.11/x
  3. Step 3: Cross multiply
    20,904.48x = 31,357.13 × 5,322.11
  4. Step 4: Simplify right side
    20,904.48x = 166,885,911.75
  5. Step 5: Solve for x
    x = 166,885,911.75/20,904.48
  6. Step 6: Final answer
    x = 7,983.26

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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.