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Finding the Fourth Proportional to 12,587.55, 18,873 and 7,041.48

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Solution

The fourth proportional to 12,587.55, 18,873 and 7,041.48 is: 10,557.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.55 : 18,873 = 7,041.48 : x
  2. Step 2: Convert to fraction form
    12,587.55/18,873 = 7,041.48/x
  3. Step 3: Cross multiply
    12,587.55x = 18,873 × 7,041.48
  4. Step 4: Simplify right side
    12,587.55x = 132,893,852.04
  5. Step 5: Solve for x
    x = 132,893,852.04/12,587.55
  6. Step 6: Final answer
    x = 10,557.56

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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.