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Finding the Fourth Proportional to 14,477.28, 19,979.04 and 8,189.52

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Solution

The fourth proportional to 14,477.28, 19,979.04 and 8,189.52 is: 11,301.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,477.28 : 19,979.04 = 8,189.52 : x
  2. Step 2: Convert to fraction form
    14,477.28/19,979.04 = 8,189.52/x
  3. Step 3: Cross multiply
    14,477.28x = 19,979.04 × 8,189.52
  4. Step 4: Simplify right side
    14,477.28x = 163,618,747.66
  5. Step 5: Solve for x
    x = 163,618,747.66/14,477.28
  6. Step 6: Final answer
    x = 11,301.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.