Home / 13,724.12-18,934.44-8,417

Finding the Fourth Proportional to 13,724.12, 18,934.44 and 8,417

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Solution

The fourth proportional to 13,724.12, 18,934.44 and 8,417 is: 11,612.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.12 : 18,934.44 = 8,417 : x
  2. Step 2: Convert to fraction form
    13,724.12/18,934.44 = 8,417/x
  3. Step 3: Cross multiply
    13,724.12x = 18,934.44 × 8,417
  4. Step 4: Simplify right side
    13,724.12x = 159,371,181.48
  5. Step 5: Solve for x
    x = 159,371,181.48/13,724.12
  6. Step 6: Final answer
    x = 11,612.49

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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.