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Finding the Fourth Proportional to 12,661.74, 17,469.00 and 7,624.05

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Solution

The fourth proportional to 12,661.74, 17,469.00 and 7,624.05 is: 10,518.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.74 : 17,469.00 = 7,624.05 : x
  2. Step 2: Convert to fraction form
    12,661.74/17,469.00 = 7,624.05/x
  3. Step 3: Cross multiply
    12,661.74x = 17,469.00 × 7,624.05
  4. Step 4: Simplify right side
    12,661.74x = 133,184,545.24
  5. Step 5: Solve for x
    x = 133,184,545.24/12,661.74
  6. Step 6: Final answer
    x = 10,518.66

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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.