Home / 30,028.13-41,438.81-16,780.13

Finding the Fourth Proportional to 30,028.13, 41,438.81 and 16,780.13

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Solution

The fourth proportional to 30,028.13, 41,438.81 and 16,780.13 is: 23,156.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,028.13 : 41,438.81 = 16,780.13 : x
  2. Step 2: Convert to fraction form
    30,028.13/41,438.81 = 16,780.13/x
  3. Step 3: Cross multiply
    30,028.13x = 41,438.81 × 16,780.13
  4. Step 4: Simplify right side
    30,028.13x = 695,348,618.85
  5. Step 5: Solve for x
    x = 695,348,618.85/30,028.13
  6. Step 6: Final answer
    x = 23,156.57

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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.