Home / 15,742.64-21,723.86-8,669.05

Finding the Fourth Proportional to 15,742.64, 21,723.86 and 8,669.05

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Solution

The fourth proportional to 15,742.64, 21,723.86 and 8,669.05 is: 11,962.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.64 : 21,723.86 = 8,669.05 : x
  2. Step 2: Convert to fraction form
    15,742.64/21,723.86 = 8,669.05/x
  3. Step 3: Cross multiply
    15,742.64x = 21,723.86 × 8,669.05
  4. Step 4: Simplify right side
    15,742.64x = 188,325,195.90
  5. Step 5: Solve for x
    x = 188,325,195.90/15,742.64
  6. Step 6: Final answer
    x = 11,962.74

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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.