Home / 36,905.22-50,931.99-20,991.15

Finding the Fourth Proportional to 36,905.22, 50,931.99 and 20,991.15

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Solution

The fourth proportional to 36,905.22, 50,931.99 and 20,991.15 is: 28,969.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,905.22 : 50,931.99 = 20,991.15 : x
  2. Step 2: Convert to fraction form
    36,905.22/50,931.99 = 20,991.15/x
  3. Step 3: Cross multiply
    36,905.22x = 50,931.99 × 20,991.15
  4. Step 4: Simplify right side
    36,905.22x = 1,069,121,041.89
  5. Step 5: Solve for x
    x = 1,069,121,041.89/36,905.22
  6. Step 6: Final answer
    x = 28,969.37

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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.