Home / 36,439.07-50,286.02-21,128.58

Finding the Fourth Proportional to 36,439.07, 50,286.02 and 21,128.58

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Solution

The fourth proportional to 36,439.07, 50,286.02 and 21,128.58 is: 29,157.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,439.07 : 50,286.02 = 21,128.58 : x
  2. Step 2: Convert to fraction form
    36,439.07/50,286.02 = 21,128.58/x
  3. Step 3: Cross multiply
    36,439.07x = 50,286.02 × 21,128.58
  4. Step 4: Simplify right side
    36,439.07x = 1,062,472,090.81
  5. Step 5: Solve for x
    x = 1,062,472,090.81/36,439.07
  6. Step 6: Final answer
    x = 29,157.50

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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.