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Finding the Fourth Proportional to 14,695.05, 20,279.09 and 7,980.62

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Solution

The fourth proportional to 14,695.05, 20,279.09 and 7,980.62 is: 11,013.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,695.05 : 20,279.09 = 7,980.62 : x
  2. Step 2: Convert to fraction form
    14,695.05/20,279.09 = 7,980.62/x
  3. Step 3: Cross multiply
    14,695.05x = 20,279.09 × 7,980.62
  4. Step 4: Simplify right side
    14,695.05x = 161,839,711.24
  5. Step 5: Solve for x
    x = 161,839,711.24/14,695.05
  6. Step 6: Final answer
    x = 11,013.21

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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.