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Finding the Fourth Proportional to 11,020.96, 15,208.96 and 5,985.20

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Solution

The fourth proportional to 11,020.96, 15,208.96 and 5,985.20 is: 8,259.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,020.96 : 15,208.96 = 5,985.20 : x
  2. Step 2: Convert to fraction form
    11,020.96/15,208.96 = 5,985.20/x
  3. Step 3: Cross multiply
    11,020.96x = 15,208.96 × 5,985.20
  4. Step 4: Simplify right side
    11,020.96x = 91,028,667.39
  5. Step 5: Solve for x
    x = 91,028,667.39/11,020.96
  6. Step 6: Final answer
    x = 8,259.60

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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.