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Finding the Fourth Proportional to 18,807.52, 28,103.33 and 14,340.64

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Solution

The fourth proportional to 18,807.52, 28,103.33 and 14,340.64 is: 21,428.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.52 : 28,103.33 = 14,340.64 : x
  2. Step 2: Convert to fraction form
    18,807.52/28,103.33 = 14,340.64/x
  3. Step 3: Cross multiply
    18,807.52x = 28,103.33 × 14,340.64
  4. Step 4: Simplify right side
    18,807.52x = 403,019,738.33
  5. Step 5: Solve for x
    x = 403,019,738.33/18,807.52
  6. Step 6: Final answer
    x = 21,428.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.