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Finding the Fourth Proportional to 11,458.88, 15,813.87 and 6,424.71

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Solution

The fourth proportional to 11,458.88, 15,813.87 and 6,424.71 is: 8,866.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,458.88 : 15,813.87 = 6,424.71 : x
  2. Step 2: Convert to fraction form
    11,458.88/15,813.87 = 6,424.71/x
  3. Step 3: Cross multiply
    11,458.88x = 15,813.87 × 6,424.71
  4. Step 4: Simplify right side
    11,458.88x = 101,599,528.73
  5. Step 5: Solve for x
    x = 101,599,528.73/11,458.88
  6. Step 6: Final answer
    x = 8,866.45

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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.