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Finding the Fourth Proportional to 11,958.76, 16,510.86 and 11,215.24

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Solution

The fourth proportional to 11,958.76, 16,510.86 and 11,215.24 is: 15,484.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958.76 : 16,510.86 = 11,215.24 : x
  2. Step 2: Convert to fraction form
    11,958.76/16,510.86 = 11,215.24/x
  3. Step 3: Cross multiply
    11,958.76x = 16,510.86 × 11,215.24
  4. Step 4: Simplify right side
    11,958.76x = 185,173,257.51
  5. Step 5: Solve for x
    x = 185,173,257.51/11,958.76
  6. Step 6: Final answer
    x = 15,484.32

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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.