Home / 12,681.30-17,506.32-8,439.42

Finding the Fourth Proportional to 12,681.30, 17,506.32 and 8,439.42

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Solution

The fourth proportional to 12,681.30, 17,506.32 and 8,439.42 is: 11,650.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.30 : 17,506.32 = 8,439.42 : x
  2. Step 2: Convert to fraction form
    12,681.30/17,506.32 = 8,439.42/x
  3. Step 3: Cross multiply
    12,681.30x = 17,506.32 × 8,439.42
  4. Step 4: Simplify right side
    12,681.30x = 147,743,187.13
  5. Step 5: Solve for x
    x = 147,743,187.13/12,681.30
  6. Step 6: Final answer
    x = 11,650.48

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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.