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Finding the Fourth Proportional to 13,329.96, 19,994.40 and 5,009.28

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Solution

The fourth proportional to 13,329.96, 19,994.40 and 5,009.28 is: 7,513.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,329.96 : 19,994.40 = 5,009.28 : x
  2. Step 2: Convert to fraction form
    13,329.96/19,994.40 = 5,009.28/x
  3. Step 3: Cross multiply
    13,329.96x = 19,994.40 × 5,009.28
  4. Step 4: Simplify right side
    13,329.96x = 100,157,548.03
  5. Step 5: Solve for x
    x = 100,157,548.03/13,329.96
  6. Step 6: Final answer
    x = 7,513.72

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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.