Home / 12,812.20-17,682.59-7,509.13

Finding the Fourth Proportional to 12,812.20, 17,682.59 and 7,509.13

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Solution

The fourth proportional to 12,812.20, 17,682.59 and 7,509.13 is: 10,363.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.20 : 17,682.59 = 7,509.13 : x
  2. Step 2: Convert to fraction form
    12,812.20/17,682.59 = 7,509.13/x
  3. Step 3: Cross multiply
    12,812.20x = 17,682.59 × 7,509.13
  4. Step 4: Simplify right side
    12,812.20x = 132,780,867.05
  5. Step 5: Solve for x
    x = 132,780,867.05/12,812.20
  6. Step 6: Final answer
    x = 10,363.63

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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.