Home / 28,119.12-42,180.48-10,354.56

Finding the Fourth Proportional to 28,119.12, 42,180.48 and 10,354.56

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Solution

The fourth proportional to 28,119.12, 42,180.48 and 10,354.56 is: 15,532.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.12 : 42,180.48 = 10,354.56 : x
  2. Step 2: Convert to fraction form
    28,119.12/42,180.48 = 10,354.56/x
  3. Step 3: Cross multiply
    28,119.12x = 42,180.48 × 10,354.56
  4. Step 4: Simplify right side
    28,119.12x = 436,760,310.99
  5. Step 5: Solve for x
    x = 436,760,310.99/28,119.12
  6. Step 6: Final answer
    x = 15,532.50

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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.