Home / 18,559.58-25,589.66-12,899.12

Finding the Fourth Proportional to 18,559.58, 25,589.66 and 12,899.12

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Solution

The fourth proportional to 18,559.58, 25,589.66 and 12,899.12 is: 17,785.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,559.58 : 25,589.66 = 12,899.12 : x
  2. Step 2: Convert to fraction form
    18,559.58/25,589.66 = 12,899.12/x
  3. Step 3: Cross multiply
    18,559.58x = 25,589.66 × 12,899.12
  4. Step 4: Simplify right side
    18,559.58x = 330,084,095.10
  5. Step 5: Solve for x
    x = 330,084,095.10/18,559.58
  6. Step 6: Final answer
    x = 17,785.11

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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.