Home / 10,731.60-16,097.40-7,621.20

Finding the Fourth Proportional to 10,731.60, 16,097.40 and 7,621.20

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Solution

The fourth proportional to 10,731.60, 16,097.40 and 7,621.20 is: 11,431.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,731.60 : 16,097.40 = 7,621.20 : x
  2. Step 2: Convert to fraction form
    10,731.60/16,097.40 = 7,621.20/x
  3. Step 3: Cross multiply
    10,731.60x = 16,097.40 × 7,621.20
  4. Step 4: Simplify right side
    10,731.60x = 122,681,504.88
  5. Step 5: Solve for x
    x = 122,681,504.88/10,731.60
  6. Step 6: Final answer
    x = 11,431.80

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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.