Home / 28,181.98-38,891.57-15,434.92

Finding the Fourth Proportional to 28,181.98, 38,891.57 and 15,434.92

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Solution

The fourth proportional to 28,181.98, 38,891.57 and 15,434.92 is: 21,300.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.98 : 38,891.57 = 15,434.92 : x
  2. Step 2: Convert to fraction form
    28,181.98/38,891.57 = 15,434.92/x
  3. Step 3: Cross multiply
    28,181.98x = 38,891.57 × 15,434.92
  4. Step 4: Simplify right side
    28,181.98x = 600,288,271.62
  5. Step 5: Solve for x
    x = 600,288,271.62/28,181.98
  6. Step 6: Final answer
    x = 21,300.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.