Home / 18,765.12-25,899.34-12,059.13

Finding the Fourth Proportional to 18,765.12, 25,899.34 and 12,059.13

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Solution

The fourth proportional to 18,765.12, 25,899.34 and 12,059.13 is: 16,643.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.12 : 25,899.34 = 12,059.13 : x
  2. Step 2: Convert to fraction form
    18,765.12/25,899.34 = 12,059.13/x
  3. Step 3: Cross multiply
    18,765.12x = 25,899.34 × 12,059.13
  4. Step 4: Simplify right side
    18,765.12x = 312,323,507.97
  5. Step 5: Solve for x
    x = 312,323,507.97/18,765.12
  6. Step 6: Final answer
    x = 16,643.83

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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.