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Finding the Fourth Proportional to 13,492.58, 18,619.29 and 8,459.51

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Solution

The fourth proportional to 13,492.58, 18,619.29 and 8,459.51 is: 11,673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,492.58 : 18,619.29 = 8,459.51 : x
  2. Step 2: Convert to fraction form
    13,492.58/18,619.29 = 8,459.51/x
  3. Step 3: Cross multiply
    13,492.58x = 18,619.29 × 8,459.51
  4. Step 4: Simplify right side
    13,492.58x = 157,509,976.85
  5. Step 5: Solve for x
    x = 157,509,976.85/13,492.58
  6. Step 6: Final answer
    x = 11,673.83

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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.