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Finding the Fourth Proportional to 12,318.04, 18,484.74 and 7,134.04

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Solution

The fourth proportional to 12,318.04, 18,484.74 and 7,134.04 is: 10,705.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.04 : 18,484.74 = 7,134.04 : x
  2. Step 2: Convert to fraction form
    12,318.04/18,484.74 = 7,134.04/x
  3. Step 3: Cross multiply
    12,318.04x = 18,484.74 × 7,134.04
  4. Step 4: Simplify right side
    12,318.04x = 131,870,874.55
  5. Step 5: Solve for x
    x = 131,870,874.55/12,318.04
  6. Step 6: Final answer
    x = 10,705.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.