Home / 10,287.80-15,431.70-9,884.60

Finding the Fourth Proportional to 10,287.80, 15,431.70 and 9,884.60

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Solution

The fourth proportional to 10,287.80, 15,431.70 and 9,884.60 is: 14,826.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.80 : 15,431.70 = 9,884.60 : x
  2. Step 2: Convert to fraction form
    10,287.80/15,431.70 = 9,884.60/x
  3. Step 3: Cross multiply
    10,287.80x = 15,431.70 × 9,884.60
  4. Step 4: Simplify right side
    10,287.80x = 152,536,181.82
  5. Step 5: Solve for x
    x = 152,536,181.82/10,287.80
  6. Step 6: Final answer
    x = 14,826.90

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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.