Home / 15,814.60-21,825-8,741.68

Finding the Fourth Proportional to 15,814.60, 21,825 and 8,741.68

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Solution

The fourth proportional to 15,814.60, 21,825 and 8,741.68 is: 12,063.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,814.60 : 21,825 = 8,741.68 : x
  2. Step 2: Convert to fraction form
    15,814.60/21,825 = 8,741.68/x
  3. Step 3: Cross multiply
    15,814.60x = 21,825 × 8,741.68
  4. Step 4: Simplify right side
    15,814.60x = 190,787,166
  5. Step 5: Solve for x
    x = 190,787,166/15,814.60
  6. Step 6: Final answer
    x = 12,063.99

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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.