Home / 30,251.07-45,334.99-15,428.78

Finding the Fourth Proportional to 30,251.07, 45,334.99 and 15,428.78

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Solution

The fourth proportional to 30,251.07, 45,334.99 and 15,428.78 is: 23,121.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,251.07 : 45,334.99 = 15,428.78 : x
  2. Step 2: Convert to fraction form
    30,251.07/45,334.99 = 15,428.78/x
  3. Step 3: Cross multiply
    30,251.07x = 45,334.99 × 15,428.78
  4. Step 4: Simplify right side
    30,251.07x = 699,463,549.63
  5. Step 5: Solve for x
    x = 699,463,549.63/30,251.07
  6. Step 6: Final answer
    x = 23,121.94

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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.