Home / 12,420.26-18,630.36-3,655.16

Finding the Fourth Proportional to 12,420.26, 18,630.36 and 3,655.16

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Solution

The fourth proportional to 12,420.26, 18,630.36 and 3,655.16 is: 5,482.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.26 : 18,630.36 = 3,655.16 : x
  2. Step 2: Convert to fraction form
    12,420.26/18,630.36 = 3,655.16/x
  3. Step 3: Cross multiply
    12,420.26x = 18,630.36 × 3,655.16
  4. Step 4: Simplify right side
    12,420.26x = 68,096,946.66
  5. Step 5: Solve for x
    x = 68,096,946.66/12,420.26
  6. Step 6: Final answer
    x = 5,482.73

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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.