Home / 12,455.43-17,187.10-7,418.95

Finding the Fourth Proportional to 12,455.43, 17,187.10 and 7,418.95

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Solution

The fourth proportional to 12,455.43, 17,187.10 and 7,418.95 is: 10,237.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.43 : 17,187.10 = 7,418.95 : x
  2. Step 2: Convert to fraction form
    12,455.43/17,187.10 = 7,418.95/x
  3. Step 3: Cross multiply
    12,455.43x = 17,187.10 × 7,418.95
  4. Step 4: Simplify right side
    12,455.43x = 127,510,235.55
  5. Step 5: Solve for x
    x = 127,510,235.55/12,455.43
  6. Step 6: Final answer
    x = 10,237.32

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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.