Home / 12,549.21-17,325.41-7,839.87

Finding the Fourth Proportional to 12,549.21, 17,325.41 and 7,839.87

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Solution

The fourth proportional to 12,549.21, 17,325.41 and 7,839.87 is: 10,823.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,549.21 : 17,325.41 = 7,839.87 : x
  2. Step 2: Convert to fraction form
    12,549.21/17,325.41 = 7,839.87/x
  3. Step 3: Cross multiply
    12,549.21x = 17,325.41 × 7,839.87
  4. Step 4: Simplify right side
    12,549.21x = 135,828,962.10
  5. Step 5: Solve for x
    x = 135,828,962.10/12,549.21
  6. Step 6: Final answer
    x = 10,823.71

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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.