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Finding the Fourth Proportional to 28,101.99, 38,786.18 and 18,043.14

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Solution

The fourth proportional to 28,101.99, 38,786.18 and 18,043.14 is: 24,903.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.99 : 38,786.18 = 18,043.14 : x
  2. Step 2: Convert to fraction form
    28,101.99/38,786.18 = 18,043.14/x
  3. Step 3: Cross multiply
    28,101.99x = 38,786.18 × 18,043.14
  4. Step 4: Simplify right side
    28,101.99x = 699,824,475.81
  5. Step 5: Solve for x
    x = 699,824,475.81/28,101.99
  6. Step 6: Final answer
    x = 24,903.02

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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.