Home / 10,665.60-15,998.40-3,271.20

Finding the Fourth Proportional to 10,665.60, 15,998.40 and 3,271.20

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Solution

The fourth proportional to 10,665.60, 15,998.40 and 3,271.20 is: 4,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,665.60 : 15,998.40 = 3,271.20 : x
  2. Step 2: Convert to fraction form
    10,665.60/15,998.40 = 3,271.20/x
  3. Step 3: Cross multiply
    10,665.60x = 15,998.40 × 3,271.20
  4. Step 4: Simplify right side
    10,665.60x = 52,333,966.08
  5. Step 5: Solve for x
    x = 52,333,966.08/10,665.60
  6. Step 6: Final answer
    x = 4,906.80

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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.