Home / 20,127.92-30,199.08-10,269.68

Finding the Fourth Proportional to 20,127.92, 30,199.08 and 10,269.68

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Solution

The fourth proportional to 20,127.92, 30,199.08 and 10,269.68 is: 15,408.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.92 : 30,199.08 = 10,269.68 : x
  2. Step 2: Convert to fraction form
    20,127.92/30,199.08 = 10,269.68/x
  3. Step 3: Cross multiply
    20,127.92x = 30,199.08 × 10,269.68
  4. Step 4: Simplify right side
    20,127.92x = 310,134,887.89
  5. Step 5: Solve for x
    x = 310,134,887.89/20,127.92
  6. Step 6: Final answer
    x = 15,408.19

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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.