Home / 12,290.36-18,425.10-5,720.36

Finding the Fourth Proportional to 12,290.36, 18,425.10 and 5,720.36

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Solution

The fourth proportional to 12,290.36, 18,425.10 and 5,720.36 is: 8,575.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.36 : 18,425.10 = 5,720.36 : x
  2. Step 2: Convert to fraction form
    12,290.36/18,425.10 = 5,720.36/x
  3. Step 3: Cross multiply
    12,290.36x = 18,425.10 × 5,720.36
  4. Step 4: Simplify right side
    12,290.36x = 105,398,205.04
  5. Step 5: Solve for x
    x = 105,398,205.04/12,290.36
  6. Step 6: Final answer
    x = 8,575.68

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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.