Home / 12,275.89-18,380.49-9,629.35

Finding the Fourth Proportional to 12,275.89, 18,380.49 and 9,629.35

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Solution

The fourth proportional to 12,275.89, 18,380.49 and 9,629.35 is: 14,417.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,275.89 : 18,380.49 = 9,629.35 : x
  2. Step 2: Convert to fraction form
    12,275.89/18,380.49 = 9,629.35/x
  3. Step 3: Cross multiply
    12,275.89x = 18,380.49 × 9,629.35
  4. Step 4: Simplify right side
    12,275.89x = 176,992,171.38
  5. Step 5: Solve for x
    x = 176,992,171.38/12,275.89
  6. Step 6: Final answer
    x = 14,417.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.