Home / 39,080.91-53,931.70-21,175.90

Finding the Fourth Proportional to 39,080.91, 53,931.70 and 21,175.90

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Solution

The fourth proportional to 39,080.91, 53,931.70 and 21,175.90 is: 29,222.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,080.91 : 53,931.70 = 21,175.90 : x
  2. Step 2: Convert to fraction form
    39,080.91/53,931.70 = 21,175.90/x
  3. Step 3: Cross multiply
    39,080.91x = 53,931.70 × 21,175.90
  4. Step 4: Simplify right side
    39,080.91x = 1,142,052,016.37
  5. Step 5: Solve for x
    x = 1,142,052,016.37/39,080.91
  6. Step 6: Final answer
    x = 29,222.76

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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.