Home / 13,724.60-18,940.28-8,416.26

Finding the Fourth Proportional to 13,724.60, 18,940.28 and 8,416.26

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Solution

The fourth proportional to 13,724.60, 18,940.28 and 8,416.26 is: 11,614.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.60 : 18,940.28 = 8,416.26 : x
  2. Step 2: Convert to fraction form
    13,724.60/18,940.28 = 8,416.26/x
  3. Step 3: Cross multiply
    13,724.60x = 18,940.28 × 8,416.26
  4. Step 4: Simplify right side
    13,724.60x = 159,406,320.95
  5. Step 5: Solve for x
    x = 159,406,320.95/13,724.60
  6. Step 6: Final answer
    x = 11,614.64

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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.