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Finding the Fourth Proportional to 11,412.43, 15,726.71 and 8,726.67

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Solution

The fourth proportional to 11,412.43, 15,726.71 and 8,726.67 is: 12,025.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,412.43 : 15,726.71 = 8,726.67 : x
  2. Step 2: Convert to fraction form
    11,412.43/15,726.71 = 8,726.67/x
  3. Step 3: Cross multiply
    11,412.43x = 15,726.71 × 8,726.67
  4. Step 4: Simplify right side
    11,412.43x = 137,241,808.36
  5. Step 5: Solve for x
    x = 137,241,808.36/11,412.43
  6. Step 6: Final answer
    x = 12,025.64

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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.