Home / 22,860.28-31,558.68-21,639.34

Finding the Fourth Proportional to 22,860.28, 31,558.68 and 21,639.34

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Solution

The fourth proportional to 22,860.28, 31,558.68 and 21,639.34 is: 29,873.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,860.28 : 31,558.68 = 21,639.34 : x
  2. Step 2: Convert to fraction form
    22,860.28/31,558.68 = 21,639.34/x
  3. Step 3: Cross multiply
    22,860.28x = 31,558.68 × 21,639.34
  4. Step 4: Simplify right side
    22,860.28x = 682,909,006.47
  5. Step 5: Solve for x
    x = 682,909,006.47/22,860.28
  6. Step 6: Final answer
    x = 29,873.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.