Home / 28,271.40-42,380.10-10,497.30

Finding the Fourth Proportional to 28,271.40, 42,380.10 and 10,497.30

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Solution

The fourth proportional to 28,271.40, 42,380.10 and 10,497.30 is: 15,735.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.40 : 42,380.10 = 10,497.30 : x
  2. Step 2: Convert to fraction form
    28,271.40/42,380.10 = 10,497.30/x
  3. Step 3: Cross multiply
    28,271.40x = 42,380.10 × 10,497.30
  4. Step 4: Simplify right side
    28,271.40x = 444,876,623.73
  5. Step 5: Solve for x
    x = 444,876,623.73/28,271.40
  6. Step 6: Final answer
    x = 15,735.92

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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.