Home / 21,571.70-29,773.07-13,078.45

Finding the Fourth Proportional to 21,571.70, 29,773.07 and 13,078.45

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Solution

The fourth proportional to 21,571.70, 29,773.07 and 13,078.45 is: 18,050.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.70 : 29,773.07 = 13,078.45 : x
  2. Step 2: Convert to fraction form
    21,571.70/29,773.07 = 13,078.45/x
  3. Step 3: Cross multiply
    21,571.70x = 29,773.07 × 13,078.45
  4. Step 4: Simplify right side
    21,571.70x = 389,385,607.34
  5. Step 5: Solve for x
    x = 389,385,607.34/21,571.70
  6. Step 6: Final answer
    x = 18,050.76

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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.