Home / 15,814.45-21,819.68-9,101.98

Finding the Fourth Proportional to 15,814.45, 21,819.68 and 9,101.98

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Solution

The fourth proportional to 15,814.45, 21,819.68 and 9,101.98 is: 12,558.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,814.45 : 21,819.68 = 9,101.98 : x
  2. Step 2: Convert to fraction form
    15,814.45/21,819.68 = 9,101.98/x
  3. Step 3: Cross multiply
    15,814.45x = 21,819.68 × 9,101.98
  4. Step 4: Simplify right side
    15,814.45x = 198,602,245.46
  5. Step 5: Solve for x
    x = 198,602,245.46/15,814.45
  6. Step 6: Final answer
    x = 12,558.28

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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.