Home / 12,558.87-18,838.31-4,767.68

Finding the Fourth Proportional to 12,558.87, 18,838.31 and 4,767.68

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Solution

The fourth proportional to 12,558.87, 18,838.31 and 4,767.68 is: 7,151.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.87 : 18,838.31 = 4,767.68 : x
  2. Step 2: Convert to fraction form
    12,558.87/18,838.31 = 4,767.68/x
  3. Step 3: Cross multiply
    12,558.87x = 18,838.31 × 4,767.68
  4. Step 4: Simplify right side
    12,558.87x = 89,815,057.08
  5. Step 5: Solve for x
    x = 89,815,057.08/12,558.87
  6. Step 6: Final answer
    x = 7,151.52

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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.