Home / 36,345.37-50,154.69-20,428.78

Finding the Fourth Proportional to 36,345.37, 50,154.69 and 20,428.78

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Solution

The fourth proportional to 36,345.37, 50,154.69 and 20,428.78 is: 28,190.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,345.37 : 50,154.69 = 20,428.78 : x
  2. Step 2: Convert to fraction form
    36,345.37/50,154.69 = 20,428.78/x
  3. Step 3: Cross multiply
    36,345.37x = 50,154.69 × 20,428.78
  4. Step 4: Simplify right side
    36,345.37x = 1,024,599,127.98
  5. Step 5: Solve for x
    x = 1,024,599,127.98/36,345.37
  6. Step 6: Final answer
    x = 28,190.64

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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.