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Finding the Fourth Proportional to 11,591.36, 15,985.04 and 7,615.84

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Solution

The fourth proportional to 11,591.36, 15,985.04 and 7,615.84 is: 10,502.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,591.36 : 15,985.04 = 7,615.84 : x
  2. Step 2: Convert to fraction form
    11,591.36/15,985.04 = 7,615.84/x
  3. Step 3: Cross multiply
    11,591.36x = 15,985.04 × 7,615.84
  4. Step 4: Simplify right side
    11,591.36x = 121,739,507.03
  5. Step 5: Solve for x
    x = 121,739,507.03/11,591.36
  6. Step 6: Final answer
    x = 10,502.61

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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.