Home / 13,725.05-20,570.96-9,821.25

Finding the Fourth Proportional to 13,725.05, 20,570.96 and 9,821.25

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Solution

The fourth proportional to 13,725.05, 20,570.96 and 9,821.25 is: 14,719.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.05 : 20,570.96 = 9,821.25 : x
  2. Step 2: Convert to fraction form
    13,725.05/20,570.96 = 9,821.25/x
  3. Step 3: Cross multiply
    13,725.05x = 20,570.96 × 9,821.25
  4. Step 4: Simplify right side
    13,725.05x = 202,032,565.45
  5. Step 5: Solve for x
    x = 202,032,565.45/13,725.05
  6. Step 6: Final answer
    x = 14,719.99

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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.