Home / 20,538.36-30,758.48-10,518.56

Finding the Fourth Proportional to 20,538.36, 30,758.48 and 10,518.56

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Solution

The fourth proportional to 20,538.36, 30,758.48 and 10,518.56 is: 15,752.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.36 : 30,758.48 = 10,518.56 : x
  2. Step 2: Convert to fraction form
    20,538.36/30,758.48 = 10,518.56/x
  3. Step 3: Cross multiply
    20,538.36x = 30,758.48 × 10,518.56
  4. Step 4: Simplify right side
    20,538.36x = 323,534,924.96
  5. Step 5: Solve for x
    x = 323,534,924.96/20,538.36
  6. Step 6: Final answer
    x = 15,752.71

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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.