Home / 12,508.87-18,784.77-11,106.45

Finding the Fourth Proportional to 12,508.87, 18,784.77 and 11,106.45

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Solution

The fourth proportional to 12,508.87, 18,784.77 and 11,106.45 is: 16,678.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.87 : 18,784.77 = 11,106.45 : x
  2. Step 2: Convert to fraction form
    12,508.87/18,784.77 = 11,106.45/x
  3. Step 3: Cross multiply
    12,508.87x = 18,784.77 × 11,106.45
  4. Step 4: Simplify right side
    12,508.87x = 208,632,137.56
  5. Step 5: Solve for x
    x = 208,632,137.56/12,508.87
  6. Step 6: Final answer
    x = 16,678.74

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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.