Home / 28,783.14-39,725.81-21,551.46

Finding the Fourth Proportional to 28,783.14, 39,725.81 and 21,551.46

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Solution

The fourth proportional to 28,783.14, 39,725.81 and 21,551.46 is: 29,744.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,783.14 : 39,725.81 = 21,551.46 : x
  2. Step 2: Convert to fraction form
    28,783.14/39,725.81 = 21,551.46/x
  3. Step 3: Cross multiply
    28,783.14x = 39,725.81 × 21,551.46
  4. Step 4: Simplify right side
    28,783.14x = 856,148,898.80
  5. Step 5: Solve for x
    x = 856,148,898.80/28,783.14
  6. Step 6: Final answer
    x = 29,744.81

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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.