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Finding the Fourth Proportional to 14,007.84, 21,007.44 and 7,339.92

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Solution

The fourth proportional to 14,007.84, 21,007.44 and 7,339.92 is: 11,007.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,007.84 : 21,007.44 = 7,339.92 : x
  2. Step 2: Convert to fraction form
    14,007.84/21,007.44 = 7,339.92/x
  3. Step 3: Cross multiply
    14,007.84x = 21,007.44 × 7,339.92
  4. Step 4: Simplify right side
    14,007.84x = 154,192,929.00
  5. Step 5: Solve for x
    x = 154,192,929.00/14,007.84
  6. Step 6: Final answer
    x = 11,007.62

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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.