Home / 18,899.64-28,350-5,752.80

Finding the Fourth Proportional to 18,899.64, 28,350 and 5,752.80

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Solution

The fourth proportional to 18,899.64, 28,350 and 5,752.80 is: 8,629.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899.64 : 28,350 = 5,752.80 : x
  2. Step 2: Convert to fraction form
    18,899.64/28,350 = 5,752.80/x
  3. Step 3: Cross multiply
    18,899.64x = 28,350 × 5,752.80
  4. Step 4: Simplify right side
    18,899.64x = 163,091,880
  5. Step 5: Solve for x
    x = 163,091,880/18,899.64
  6. Step 6: Final answer
    x = 8,629.36

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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.