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Finding the Fourth Proportional to 12,504.60, 18,756.95 and 5,109.08

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Solution

The fourth proportional to 12,504.60, 18,756.95 and 5,109.08 is: 7,663.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,504.60 : 18,756.95 = 5,109.08 : x
  2. Step 2: Convert to fraction form
    12,504.60/18,756.95 = 5,109.08/x
  3. Step 3: Cross multiply
    12,504.60x = 18,756.95 × 5,109.08
  4. Step 4: Simplify right side
    12,504.60x = 95,830,638.78
  5. Step 5: Solve for x
    x = 95,830,638.78/12,504.60
  6. Step 6: Final answer
    x = 7,663.63

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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.