Home / 18,933.64-28,399.56-6,453.16

Finding the Fourth Proportional to 18,933.64, 28,399.56 and 6,453.16

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Solution

The fourth proportional to 18,933.64, 28,399.56 and 6,453.16 is: 9,679.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.64 : 28,399.56 = 6,453.16 : x
  2. Step 2: Convert to fraction form
    18,933.64/28,399.56 = 6,453.16/x
  3. Step 3: Cross multiply
    18,933.64x = 28,399.56 × 6,453.16
  4. Step 4: Simplify right side
    18,933.64x = 183,266,904.61
  5. Step 5: Solve for x
    x = 183,266,904.61/18,933.64
  6. Step 6: Final answer
    x = 9,679.43

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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.