Home / 31,239.21-43,079.39-28,646.02

Finding the Fourth Proportional to 31,239.21, 43,079.39 and 28,646.02

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Solution

The fourth proportional to 31,239.21, 43,079.39 and 28,646.02 is: 39,503.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,239.21 : 43,079.39 = 28,646.02 : x
  2. Step 2: Convert to fraction form
    31,239.21/43,079.39 = 28,646.02/x
  3. Step 3: Cross multiply
    31,239.21x = 43,079.39 × 28,646.02
  4. Step 4: Simplify right side
    31,239.21x = 1,234,052,883.69
  5. Step 5: Solve for x
    x = 1,234,052,883.69/31,239.21
  6. Step 6: Final answer
    x = 39,503.34

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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.