Home / 30,380.96-45,521.40-18,669.44

Finding the Fourth Proportional to 30,380.96, 45,521.40 and 18,669.44

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Solution

The fourth proportional to 30,380.96, 45,521.40 and 18,669.44 is: 27,973.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,380.96 : 45,521.40 = 18,669.44 : x
  2. Step 2: Convert to fraction form
    30,380.96/45,521.40 = 18,669.44/x
  3. Step 3: Cross multiply
    30,380.96x = 45,521.40 × 18,669.44
  4. Step 4: Simplify right side
    30,380.96x = 849,859,046.02
  5. Step 5: Solve for x
    x = 849,859,046.02/30,380.96
  6. Step 6: Final answer
    x = 27,973.41

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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.