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Finding the Fourth Proportional to 12,347.58, 18,518.81 and 4,448.87

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Solution

The fourth proportional to 12,347.58, 18,518.81 and 4,448.87 is: 6,672.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.58 : 18,518.81 = 4,448.87 : x
  2. Step 2: Convert to fraction form
    12,347.58/18,518.81 = 4,448.87/x
  3. Step 3: Cross multiply
    12,347.58x = 18,518.81 × 4,448.87
  4. Step 4: Simplify right side
    12,347.58x = 82,387,663.41
  5. Step 5: Solve for x
    x = 82,387,663.41/12,347.58
  6. Step 6: Final answer
    x = 6,672.37

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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.