Home / 28,818.99-43,221.20-9,087.39

Finding the Fourth Proportional to 28,818.99, 43,221.20 and 9,087.39

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Solution

The fourth proportional to 28,818.99, 43,221.20 and 9,087.39 is: 13,628.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,818.99 : 43,221.20 = 9,087.39 : x
  2. Step 2: Convert to fraction form
    28,818.99/43,221.20 = 9,087.39/x
  3. Step 3: Cross multiply
    28,818.99x = 43,221.20 × 9,087.39
  4. Step 4: Simplify right side
    28,818.99x = 392,767,855.23
  5. Step 5: Solve for x
    x = 392,767,855.23/28,818.99
  6. Step 6: Final answer
    x = 13,628.79

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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.