Home / 15,373.12-21,193.52-12,992.96

Finding the Fourth Proportional to 15,373.12, 21,193.52 and 12,992.96

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Solution

The fourth proportional to 15,373.12, 21,193.52 and 12,992.96 is: 17,912.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,373.12 : 21,193.52 = 12,992.96 : x
  2. Step 2: Convert to fraction form
    15,373.12/21,193.52 = 12,992.96/x
  3. Step 3: Cross multiply
    15,373.12x = 21,193.52 × 12,992.96
  4. Step 4: Simplify right side
    15,373.12x = 275,366,557.62
  5. Step 5: Solve for x
    x = 275,366,557.62/15,373.12
  6. Step 6: Final answer
    x = 17,912.21

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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.