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Finding the Fourth Proportional to 19,124.58, 28,696.69 and 7,888.21

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Solution

The fourth proportional to 19,124.58, 28,696.69 and 7,888.21 is: 11,836.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,124.58 : 28,696.69 = 7,888.21 : x
  2. Step 2: Convert to fraction form
    19,124.58/28,696.69 = 7,888.21/x
  3. Step 3: Cross multiply
    19,124.58x = 28,696.69 × 7,888.21
  4. Step 4: Simplify right side
    19,124.58x = 226,365,455.14
  5. Step 5: Solve for x
    x = 226,365,455.14/19,124.58
  6. Step 6: Final answer
    x = 11,836.36

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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.