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Finding the Fourth Proportional to 10,016.80, 15,025.20 and 3,090.40

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Solution

The fourth proportional to 10,016.80, 15,025.20 and 3,090.40 is: 4,635.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,016.80 : 15,025.20 = 3,090.40 : x
  2. Step 2: Convert to fraction form
    10,016.80/15,025.20 = 3,090.40/x
  3. Step 3: Cross multiply
    10,016.80x = 15,025.20 × 3,090.40
  4. Step 4: Simplify right side
    10,016.80x = 46,433,878.08
  5. Step 5: Solve for x
    x = 46,433,878.08/10,016.80
  6. Step 6: Final answer
    x = 4,635.60

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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.