Home / 28,008.30-42,012.45-19,697.70

Finding the Fourth Proportional to 28,008.30, 42,012.45 and 19,697.70

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Solution

The fourth proportional to 28,008.30, 42,012.45 and 19,697.70 is: 29,546.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.30 : 42,012.45 = 19,697.70 : x
  2. Step 2: Convert to fraction form
    28,008.30/42,012.45 = 19,697.70/x
  3. Step 3: Cross multiply
    28,008.30x = 42,012.45 × 19,697.70
  4. Step 4: Simplify right side
    28,008.30x = 827,548,636.37
  5. Step 5: Solve for x
    x = 827,548,636.37/28,008.30
  6. Step 6: Final answer
    x = 29,546.55

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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.