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Finding the Fourth Proportional to 18,783.36, 28,167.36 and 6,468.48

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Solution

The fourth proportional to 18,783.36, 28,167.36 and 6,468.48 is: 9,700.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.36 : 28,167.36 = 6,468.48 : x
  2. Step 2: Convert to fraction form
    18,783.36/28,167.36 = 6,468.48/x
  3. Step 3: Cross multiply
    18,783.36x = 28,167.36 × 6,468.48
  4. Step 4: Simplify right side
    18,783.36x = 182,200,004.81
  5. Step 5: Solve for x
    x = 182,200,004.81/18,783.36
  6. Step 6: Final answer
    x = 9,700.08

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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.