Home / 12,290.26-18,439.08-5,720.36

Finding the Fourth Proportional to 12,290.26, 18,439.08 and 5,720.36

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Solution

The fourth proportional to 12,290.26, 18,439.08 and 5,720.36 is: 8,582.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.26 : 18,439.08 = 5,720.36 : x
  2. Step 2: Convert to fraction form
    12,290.26/18,439.08 = 5,720.36/x
  3. Step 3: Cross multiply
    12,290.26x = 18,439.08 × 5,720.36
  4. Step 4: Simplify right side
    12,290.26x = 105,478,175.67
  5. Step 5: Solve for x
    x = 105,478,175.67/12,290.26
  6. Step 6: Final answer
    x = 8,582.26

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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.