Home / 13,921.74-20,877.01-5,157.34

Finding the Fourth Proportional to 13,921.74, 20,877.01 and 5,157.34

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Solution

The fourth proportional to 13,921.74, 20,877.01 and 5,157.34 is: 7,733.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.74 : 20,877.01 = 5,157.34 : x
  2. Step 2: Convert to fraction form
    13,921.74/20,877.01 = 5,157.34/x
  3. Step 3: Cross multiply
    13,921.74x = 20,877.01 × 5,157.34
  4. Step 4: Simplify right side
    13,921.74x = 107,669,773.67
  5. Step 5: Solve for x
    x = 107,669,773.67/13,921.74
  6. Step 6: Final answer
    x = 7,733.93

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1.5x scale

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.