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Finding the Fourth Proportional to 13,992.61, 19,310.23 and 7,619.62

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Solution

The fourth proportional to 13,992.61, 19,310.23 and 7,619.62 is: 10,515.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.61 : 19,310.23 = 7,619.62 : x
  2. Step 2: Convert to fraction form
    13,992.61/19,310.23 = 7,619.62/x
  3. Step 3: Cross multiply
    13,992.61x = 19,310.23 × 7,619.62
  4. Step 4: Simplify right side
    13,992.61x = 147,136,614.71
  5. Step 5: Solve for x
    x = 147,136,614.71/13,992.61
  6. Step 6: Final answer
    x = 10,515.31

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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.