Home / 21,575.80-29,773.84-12,015.36

Finding the Fourth Proportional to 21,575.80, 29,773.84 and 12,015.36

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Solution

The fourth proportional to 21,575.80, 29,773.84 and 12,015.36 is: 16,580.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,575.80 : 29,773.84 = 12,015.36 : x
  2. Step 2: Convert to fraction form
    21,575.80/29,773.84 = 12,015.36/x
  3. Step 3: Cross multiply
    21,575.80x = 29,773.84 × 12,015.36
  4. Step 4: Simplify right side
    21,575.80x = 357,743,406.18
  5. Step 5: Solve for x
    x = 357,743,406.18/21,575.80
  6. Step 6: Final answer
    x = 16,580.77

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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.