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Finding the Fourth Proportional to 14,509.91, 19,979.00 and 12,707.00

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Solution

The fourth proportional to 14,509.91, 19,979.00 and 12,707.00 is: 17,496.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,509.91 : 19,979.00 = 12,707.00 : x
  2. Step 2: Convert to fraction form
    14,509.91/19,979.00 = 12,707.00/x
  3. Step 3: Cross multiply
    14,509.91x = 19,979.00 × 12,707.00
  4. Step 4: Simplify right side
    14,509.91x = 253,873,239.81
  5. Step 5: Solve for x
    x = 253,873,239.81/14,509.91
  6. Step 6: Final answer
    x = 17,496.54

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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.