Home / 20,241.72-27,903.08-15,757.56

Finding the Fourth Proportional to 20,241.72, 27,903.08 and 15,757.56

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Solution

The fourth proportional to 20,241.72, 27,903.08 and 15,757.56 is: 21,721.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,241.72 : 27,903.08 = 15,757.56 : x
  2. Step 2: Convert to fraction form
    20,241.72/27,903.08 = 15,757.56/x
  3. Step 3: Cross multiply
    20,241.72x = 27,903.08 × 15,757.56
  4. Step 4: Simplify right side
    20,241.72x = 439,684,457.28
  5. Step 5: Solve for x
    x = 439,684,457.28/20,241.72
  6. Step 6: Final answer
    x = 21,721.69

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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.