Home / 28,453.62-42,669.50-19,661.88

Finding the Fourth Proportional to 28,453.62, 42,669.50 and 19,661.88

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Solution

The fourth proportional to 28,453.62, 42,669.50 and 19,661.88 is: 29,485.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.62 : 42,669.50 = 19,661.88 : x
  2. Step 2: Convert to fraction form
    28,453.62/42,669.50 = 19,661.88/x
  3. Step 3: Cross multiply
    28,453.62x = 42,669.50 × 19,661.88
  4. Step 4: Simplify right side
    28,453.62x = 838,962,490.35
  5. Step 5: Solve for x
    x = 838,962,490.35/28,453.62
  6. Step 6: Final answer
    x = 29,485.26

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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.