Home / 12,402.24-17,115.36-6,813.60

Finding the Fourth Proportional to 12,402.24, 17,115.36 and 6,813.60

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Solution

The fourth proportional to 12,402.24, 17,115.36 and 6,813.60 is: 9,402.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,402.24 : 17,115.36 = 6,813.60 : x
  2. Step 2: Convert to fraction form
    12,402.24/17,115.36 = 6,813.60/x
  3. Step 3: Cross multiply
    12,402.24x = 17,115.36 × 6,813.60
  4. Step 4: Simplify right side
    12,402.24x = 116,617,216.90
  5. Step 5: Solve for x
    x = 116,617,216.90/12,402.24
  6. Step 6: Final answer
    x = 9,402.92

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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.