Home / 20,695.81-30,983.87-18,559.23

Finding the Fourth Proportional to 20,695.81, 30,983.87 and 18,559.23

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Solution

The fourth proportional to 20,695.81, 30,983.87 and 18,559.23 is: 27,785.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.81 : 30,983.87 = 18,559.23 : x
  2. Step 2: Convert to fraction form
    20,695.81/30,983.87 = 18,559.23/x
  3. Step 3: Cross multiply
    20,695.81x = 30,983.87 × 18,559.23
  4. Step 4: Simplify right side
    20,695.81x = 575,036,769.62
  5. Step 5: Solve for x
    x = 575,036,769.62/20,695.81
  6. Step 6: Final answer
    x = 27,785.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.