Home / 38,643.08-57,986.15-20,873.38

Finding the Fourth Proportional to 38,643.08, 57,986.15 and 20,873.38

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Solution

The fourth proportional to 38,643.08, 57,986.15 and 20,873.38 is: 31,321.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,643.08 : 57,986.15 = 20,873.38 : x
  2. Step 2: Convert to fraction form
    38,643.08/57,986.15 = 20,873.38/x
  3. Step 3: Cross multiply
    38,643.08x = 57,986.15 × 20,873.38
  4. Step 4: Simplify right side
    38,643.08x = 1,210,366,943.69
  5. Step 5: Solve for x
    x = 1,210,366,943.69/38,643.08
  6. Step 6: Final answer
    x = 31,321.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.