Home / 12,579.25-17,359.77-6,990.25

Finding the Fourth Proportional to 12,579.25, 17,359.77 and 6,990.25

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Solution

The fourth proportional to 12,579.25, 17,359.77 and 6,990.25 is: 9,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.25 : 17,359.77 = 6,990.25 : x
  2. Step 2: Convert to fraction form
    12,579.25/17,359.77 = 6,990.25/x
  3. Step 3: Cross multiply
    12,579.25x = 17,359.77 × 6,990.25
  4. Step 4: Simplify right side
    12,579.25x = 121,349,132.24
  5. Step 5: Solve for x
    x = 121,349,132.24/12,579.25
  6. Step 6: Final answer
    x = 9,646.77

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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.