Home / 12,655.36-17,464.53-6,990.25

Finding the Fourth Proportional to 12,655.36, 17,464.53 and 6,990.25

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Solution

The fourth proportional to 12,655.36, 17,464.53 and 6,990.25 is: 9,646.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.36 : 17,464.53 = 6,990.25 : x
  2. Step 2: Convert to fraction form
    12,655.36/17,464.53 = 6,990.25/x
  3. Step 3: Cross multiply
    12,655.36x = 17,464.53 × 6,990.25
  4. Step 4: Simplify right side
    12,655.36x = 122,081,369.70
  5. Step 5: Solve for x
    x = 122,081,369.70/12,655.36
  6. Step 6: Final answer
    x = 9,646.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.