Home / 28,388.63-42,601.17-19,039.21

Finding the Fourth Proportional to 28,388.63, 42,601.17 and 19,039.21

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Solution

The fourth proportional to 28,388.63, 42,601.17 and 19,039.21 is: 28,571.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.63 : 42,601.17 = 19,039.21 : x
  2. Step 2: Convert to fraction form
    28,388.63/42,601.17 = 19,039.21/x
  3. Step 3: Cross multiply
    28,388.63x = 42,601.17 × 19,039.21
  4. Step 4: Simplify right side
    28,388.63x = 811,092,621.88
  5. Step 5: Solve for x
    x = 811,092,621.88/28,388.63
  6. Step 6: Final answer
    x = 28,571.04

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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.