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Finding the Fourth Proportional to 8,936.76, 13,337.61 and 8,703.48

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Solution

The fourth proportional to 8,936.76, 13,337.61 and 8,703.48 is: 12,989.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.76 : 13,337.61 = 8,703.48 : x
  2. Step 2: Convert to fraction form
    8,936.76/13,337.61 = 8,703.48/x
  3. Step 3: Cross multiply
    8,936.76x = 13,337.61 × 8,703.48
  4. Step 4: Simplify right side
    8,936.76x = 116,083,621.88
  5. Step 5: Solve for x
    x = 116,083,621.88/8,936.76
  6. Step 6: Final answer
    x = 12,989.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.