Home / 28,231.40-42,354.16-19,927.62

Finding the Fourth Proportional to 28,231.40, 42,354.16 and 19,927.62

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Solution

The fourth proportional to 28,231.40, 42,354.16 and 19,927.62 is: 29,896.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.40 : 42,354.16 = 19,927.62 : x
  2. Step 2: Convert to fraction form
    28,231.40/42,354.16 = 19,927.62/x
  3. Step 3: Cross multiply
    28,231.40x = 42,354.16 × 19,927.62
  4. Step 4: Simplify right side
    28,231.40x = 844,017,556.08
  5. Step 5: Solve for x
    x = 844,017,556.08/28,231.40
  6. Step 6: Final answer
    x = 29,896.41

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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.