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Finding the Fourth Proportional to 14,000.90, 19,321.20 and 7,713.27

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Solution

The fourth proportional to 14,000.90, 19,321.20 and 7,713.27 is: 10,644.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,000.90 : 19,321.20 = 7,713.27 : x
  2. Step 2: Convert to fraction form
    14,000.90/19,321.20 = 7,713.27/x
  3. Step 3: Cross multiply
    14,000.90x = 19,321.20 × 7,713.27
  4. Step 4: Simplify right side
    14,000.90x = 149,029,632.32
  5. Step 5: Solve for x
    x = 149,029,632.32/14,000.90
  6. Step 6: Final answer
    x = 10,644.29

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Half scale
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Double scale
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Similar ratio
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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.