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Finding the Fourth Proportional to 20,300.00, 30,415.14 and 18,245.66

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Solution

The fourth proportional to 20,300.00, 30,415.14 and 18,245.66 is: 27,337.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.00 : 30,415.14 = 18,245.66 : x
  2. Step 2: Convert to fraction form
    20,300.00/30,415.14 = 18,245.66/x
  3. Step 3: Cross multiply
    20,300.00x = 30,415.14 × 18,245.66
  4. Step 4: Simplify right side
    20,300.00x = 554,944,151.22
  5. Step 5: Solve for x
    x = 554,944,151.22/20,300.00
  6. Step 6: Final answer
    x = 27,337.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.