Home / 20,859.28-31,282.52-11,370

Finding the Fourth Proportional to 20,859.28, 31,282.52 and 11,370

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Solution

The fourth proportional to 20,859.28, 31,282.52 and 11,370 is: 17,051.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.28 : 31,282.52 = 11,370 : x
  2. Step 2: Convert to fraction form
    20,859.28/31,282.52 = 11,370/x
  3. Step 3: Cross multiply
    20,859.28x = 31,282.52 × 11,370
  4. Step 4: Simplify right side
    20,859.28x = 355,682,252.40
  5. Step 5: Solve for x
    x = 355,682,252.40/20,859.28
  6. Step 6: Final answer
    x = 17,051.51

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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.