Home / 13,699.32-18,899.96-10,122.90

Finding the Fourth Proportional to 13,699.32, 18,899.96 and 10,122.90

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Solution

The fourth proportional to 13,699.32, 18,899.96 and 10,122.90 is: 13,965.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.32 : 18,899.96 = 10,122.90 : x
  2. Step 2: Convert to fraction form
    13,699.32/18,899.96 = 10,122.90/x
  3. Step 3: Cross multiply
    13,699.32x = 18,899.96 × 10,122.90
  4. Step 4: Simplify right side
    13,699.32x = 191,322,405.08
  5. Step 5: Solve for x
    x = 191,322,405.08/13,699.32
  6. Step 6: Final answer
    x = 13,965.83

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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.