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Finding the Fourth Proportional to 12,460.55, 18,670.01 and 8,756.15

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Solution

The fourth proportional to 12,460.55, 18,670.01 and 8,756.15 is: 13,119.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,460.55 : 18,670.01 = 8,756.15 : x
  2. Step 2: Convert to fraction form
    12,460.55/18,670.01 = 8,756.15/x
  3. Step 3: Cross multiply
    12,460.55x = 18,670.01 × 8,756.15
  4. Step 4: Simplify right side
    12,460.55x = 163,477,270.93
  5. Step 5: Solve for x
    x = 163,477,270.93/12,460.55
  6. Step 6: Final answer
    x = 13,119.59

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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.