Home / 12,353.60-18,530.40-4,145.60

Finding the Fourth Proportional to 12,353.60, 18,530.40 and 4,145.60

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Solution

The fourth proportional to 12,353.60, 18,530.40 and 4,145.60 is: 6,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,353.60 : 18,530.40 = 4,145.60 : x
  2. Step 2: Convert to fraction form
    12,353.60/18,530.40 = 4,145.60/x
  3. Step 3: Cross multiply
    12,353.60x = 18,530.40 × 4,145.60
  4. Step 4: Simplify right side
    12,353.60x = 76,819,626.24
  5. Step 5: Solve for x
    x = 76,819,626.24/12,353.60
  6. Step 6: Final answer
    x = 6,218.40

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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.