Home / 18,689.12-28,033.44-4,837.76

Finding the Fourth Proportional to 18,689.12, 28,033.44 and 4,837.76

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Solution

The fourth proportional to 18,689.12, 28,033.44 and 4,837.76 is: 7,256.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.12 : 28,033.44 = 4,837.76 : x
  2. Step 2: Convert to fraction form
    18,689.12/28,033.44 = 4,837.76/x
  3. Step 3: Cross multiply
    18,689.12x = 28,033.44 × 4,837.76
  4. Step 4: Simplify right side
    18,689.12x = 135,619,054.69
  5. Step 5: Solve for x
    x = 135,619,054.69/18,689.12
  6. Step 6: Final answer
    x = 7,256.58

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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.