Home / 20,408.13-30,618.81-10,012.59

Finding the Fourth Proportional to 20,408.13, 30,618.81 and 10,012.59

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Solution

The fourth proportional to 20,408.13, 30,618.81 and 10,012.59 is: 15,022.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,408.13 : 30,618.81 = 10,012.59 : x
  2. Step 2: Convert to fraction form
    20,408.13/30,618.81 = 10,012.59/x
  3. Step 3: Cross multiply
    20,408.13x = 30,618.81 × 10,012.59
  4. Step 4: Simplify right side
    20,408.13x = 306,573,590.82
  5. Step 5: Solve for x
    x = 306,573,590.82/20,408.13
  6. Step 6: Final answer
    x = 15,022.13

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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.