Home / 21,228.36-31,842.50-5,645.99

Finding the Fourth Proportional to 21,228.36, 31,842.50 and 5,645.99

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Solution

The fourth proportional to 21,228.36, 31,842.50 and 5,645.99 is: 8,468.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228.36 : 31,842.50 = 5,645.99 : x
  2. Step 2: Convert to fraction form
    21,228.36/31,842.50 = 5,645.99/x
  3. Step 3: Cross multiply
    21,228.36x = 31,842.50 × 5,645.99
  4. Step 4: Simplify right side
    21,228.36x = 179,782,277.36
  5. Step 5: Solve for x
    x = 179,782,277.36/21,228.36
  6. Step 6: Final answer
    x = 8,468.97

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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.