Home / 28,441.20-42,643.48-11,812.68

Finding the Fourth Proportional to 28,441.20, 42,643.48 and 11,812.68

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Solution

The fourth proportional to 28,441.20, 42,643.48 and 11,812.68 is: 17,711.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,441.20 : 42,643.48 = 11,812.68 : x
  2. Step 2: Convert to fraction form
    28,441.20/42,643.48 = 11,812.68/x
  3. Step 3: Cross multiply
    28,441.20x = 42,643.48 × 11,812.68
  4. Step 4: Simplify right side
    28,441.20x = 503,733,783.33
  5. Step 5: Solve for x
    x = 503,733,783.33/28,441.20
  6. Step 6: Final answer
    x = 17,711.41

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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.