Home / 12,948.11-19,425.27-7,687.70

Finding the Fourth Proportional to 12,948.11, 19,425.27 and 7,687.70

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Solution

The fourth proportional to 12,948.11, 19,425.27 and 7,687.70 is: 11,533.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,948.11 : 19,425.27 = 7,687.70 : x
  2. Step 2: Convert to fraction form
    12,948.11/19,425.27 = 7,687.70/x
  3. Step 3: Cross multiply
    12,948.11x = 19,425.27 × 7,687.70
  4. Step 4: Simplify right side
    12,948.11x = 149,335,551.05
  5. Step 5: Solve for x
    x = 149,335,551.05/12,948.11
  6. Step 6: Final answer
    x = 11,533.39

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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.