Home / 30,378.72-41,925.66-18,441.12

Finding the Fourth Proportional to 30,378.72, 41,925.66 and 18,441.12

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Solution

The fourth proportional to 30,378.72, 41,925.66 and 18,441.12 is: 25,450.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378.72 : 41,925.66 = 18,441.12 : x
  2. Step 2: Convert to fraction form
    30,378.72/41,925.66 = 18,441.12/x
  3. Step 3: Cross multiply
    30,378.72x = 41,925.66 × 18,441.12
  4. Step 4: Simplify right side
    30,378.72x = 773,156,127.14
  5. Step 5: Solve for x
    x = 773,156,127.14/30,378.72
  6. Step 6: Final answer
    x = 25,450.58

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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.