Home / 12,661.16-18,980.78-4,864.50

Finding the Fourth Proportional to 12,661.16, 18,980.78 and 4,864.50

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Solution

The fourth proportional to 12,661.16, 18,980.78 and 4,864.50 is: 7,292.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.16 : 18,980.78 = 4,864.50 : x
  2. Step 2: Convert to fraction form
    12,661.16/18,980.78 = 4,864.50/x
  3. Step 3: Cross multiply
    12,661.16x = 18,980.78 × 4,864.50
  4. Step 4: Simplify right side
    12,661.16x = 92,331,979.99
  5. Step 5: Solve for x
    x = 92,331,979.99/12,661.16
  6. Step 6: Final answer
    x = 7,292.54

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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.