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Finding the Fourth Proportional to 14,000.72, 19,320.64 and 7,952.09

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Solution

The fourth proportional to 14,000.72, 19,320.64 and 7,952.09 is: 10,973.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,000.72 : 19,320.64 = 7,952.09 : x
  2. Step 2: Convert to fraction form
    14,000.72/19,320.64 = 7,952.09/x
  3. Step 3: Cross multiply
    14,000.72x = 19,320.64 × 7,952.09
  4. Step 4: Simplify right side
    14,000.72x = 153,639,351.65
  5. Step 5: Solve for x
    x = 153,639,351.65/14,000.72
  6. Step 6: Final answer
    x = 10,973.68

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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.