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Finding the Fourth Proportional to 13,486.84, 18,614.82 and 8,762.92

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Solution

The fourth proportional to 13,486.84, 18,614.82 and 8,762.92 is: 12,094.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.84 : 18,614.82 = 8,762.92 : x
  2. Step 2: Convert to fraction form
    13,486.84/18,614.82 = 8,762.92/x
  3. Step 3: Cross multiply
    13,486.84x = 18,614.82 × 8,762.92
  4. Step 4: Simplify right side
    13,486.84x = 163,120,178.47
  5. Step 5: Solve for x
    x = 163,120,178.47/13,486.84
  6. Step 6: Final answer
    x = 12,094.77

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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.