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Finding the Fourth Proportional to 10,405.60, 15,608.40 and 4,168.60

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Solution

The fourth proportional to 10,405.60, 15,608.40 and 4,168.60 is: 6,252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,405.60 : 15,608.40 = 4,168.60 : x
  2. Step 2: Convert to fraction form
    10,405.60/15,608.40 = 4,168.60/x
  3. Step 3: Cross multiply
    10,405.60x = 15,608.40 × 4,168.60
  4. Step 4: Simplify right side
    10,405.60x = 65,065,176.24
  5. Step 5: Solve for x
    x = 65,065,176.24/10,405.60
  6. Step 6: Final answer
    x = 6,252.90

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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.