Home / 12,480.26-18,720.59-4,160.16

Finding the Fourth Proportional to 12,480.26, 18,720.59 and 4,160.16

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Solution

The fourth proportional to 12,480.26, 18,720.59 and 4,160.16 is: 6,240.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.26 : 18,720.59 = 4,160.16 : x
  2. Step 2: Convert to fraction form
    12,480.26/18,720.59 = 4,160.16/x
  3. Step 3: Cross multiply
    12,480.26x = 18,720.59 × 4,160.16
  4. Step 4: Simplify right side
    12,480.26x = 77,880,628.89
  5. Step 5: Solve for x
    x = 77,880,628.89/12,480.26
  6. Step 6: Final answer
    x = 6,240.31

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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.