Home / 13,555.32-18,700.68-8,839.44

Finding the Fourth Proportional to 13,555.32, 18,700.68 and 8,839.44

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Solution

The fourth proportional to 13,555.32, 18,700.68 and 8,839.44 is: 12,194.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.32 : 18,700.68 = 8,839.44 : x
  2. Step 2: Convert to fraction form
    13,555.32/18,700.68 = 8,839.44/x
  3. Step 3: Cross multiply
    13,555.32x = 18,700.68 × 8,839.44
  4. Step 4: Simplify right side
    13,555.32x = 165,303,538.82
  5. Step 5: Solve for x
    x = 165,303,538.82/13,555.32
  6. Step 6: Final answer
    x = 12,194.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.