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Finding the Fourth Proportional to 13,328.98, 19,996.20 and 5,008.98

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Solution

The fourth proportional to 13,328.98, 19,996.20 and 5,008.98 is: 7,514.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.98 : 19,996.20 = 5,008.98 : x
  2. Step 2: Convert to fraction form
    13,328.98/19,996.20 = 5,008.98/x
  3. Step 3: Cross multiply
    13,328.98x = 19,996.20 × 5,008.98
  4. Step 4: Simplify right side
    13,328.98x = 100,160,565.88
  5. Step 5: Solve for x
    x = 100,160,565.88/13,328.98
  6. Step 6: Final answer
    x = 7,514.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.