Home / 13,364.88-18,449.28-8,656.80

Finding the Fourth Proportional to 13,364.88, 18,449.28 and 8,656.80

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Solution

The fourth proportional to 13,364.88, 18,449.28 and 8,656.80 is: 11,950.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,364.88 : 18,449.28 = 8,656.80 : x
  2. Step 2: Convert to fraction form
    13,364.88/18,449.28 = 8,656.80/x
  3. Step 3: Cross multiply
    13,364.88x = 18,449.28 × 8,656.80
  4. Step 4: Simplify right side
    13,364.88x = 159,711,727.10
  5. Step 5: Solve for x
    x = 159,711,727.10/13,364.88
  6. Step 6: Final answer
    x = 11,950.11

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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.