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Finding the Fourth Proportional to 12,572.76, 18,867.06 and 7,029.72

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Solution

The fourth proportional to 12,572.76, 18,867.06 and 7,029.72 is: 10,549.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.76 : 18,867.06 = 7,029.72 : x
  2. Step 2: Convert to fraction form
    12,572.76/18,867.06 = 7,029.72/x
  3. Step 3: Cross multiply
    12,572.76x = 18,867.06 × 7,029.72
  4. Step 4: Simplify right side
    12,572.76x = 132,630,149.02
  5. Step 5: Solve for x
    x = 132,630,149.02/12,572.76
  6. Step 6: Final answer
    x = 10,549.01

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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.