Home / 12,170.60-18,254.55-3,406.40

Finding the Fourth Proportional to 12,170.60, 18,254.55 and 3,406.40

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Solution

The fourth proportional to 12,170.60, 18,254.55 and 3,406.40 is: 5,109.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.60 : 18,254.55 = 3,406.40 : x
  2. Step 2: Convert to fraction form
    12,170.60/18,254.55 = 3,406.40/x
  3. Step 3: Cross multiply
    12,170.60x = 18,254.55 × 3,406.40
  4. Step 4: Simplify right side
    12,170.60x = 62,182,299.12
  5. Step 5: Solve for x
    x = 62,182,299.12/12,170.60
  6. Step 6: Final answer
    x = 5,109.22

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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.